BAPI Humidity Transmitter Catalog Page

Wireless Room Temperature and Humidity Transmitter

(Units without Temperature Setpoint or Override)

Installation and Operating Instructions

17616_ins_wireless_temp_hum_xmtr

Wireless Temperature and Humidity Transmitter Overview and Indentication

The BAPI Wireless Temperature and Humidity Transmitter measures the
room temperature and Relative Humidity and transmits the data at 418MHz
or 433MHz RF to a receiver. The transmitter is mounted in a BAPI-Stat 2 style
enclosure and has maximum in-building range of open-air range of 100 feet.

The transmit rate is approximately once every 20 seconds with an estimated
battery life of 5 to 8 years using two high-capacity 3.6V lithium batteries. Each
transmitter has a unique address with built-in error detection. Each variable
sent by the transmitter is picked up by the receiver and converted by a sepa­rate BAPI Analog Output Module to a voltage, current or resistance signal
which is sent to the controller.

Fig. 1:

Wireless Room

Temperature

Transmitter

Complete Wireless System Overview

418 MHz System:

The Transmitter measures the temperature or
temp/humidity and transmits the data at 418MHz to
the 418 MHz Receiver up to 100 feet away. The op­tional temperature setpoint and override status are
also transmitted at 418 MHz to the receiver. The
transmit rate is about once every 20 seconds with
an estimated battery life of 5 to 8 years.

The information sent by the Transmitter is picked
up by the 418 MHz Receiver and passed along
to the Analog Output Modules. Each transmitted
variable (temperature, humidity, setpoint, etc.) is
converted by a separate output module into an
analog resistance, voltage, current or relay contact
which is hard wired to the analog inputs of the BAS

Transmitter

Transmits the
Temperature,

Humidity,
Setpoint and
Override Info

418 MHz

Up to 100 Feet

Fig. 2:

418 MHz

Wireless

System

Receives the Temperature, Humidity, Setpoint

and Override Info from the Transmitter and
passes it on to the Analog Output Modules

Analog Output Modules

Converts the Temperature,

Humidity, Setpoint and

Override Info into an analog

resistance, voltage, current

or relay for the BAS controller

418 MHz Receiver

controller.

900 MHz System:

The Transmitter mea­sures the room tempera­ture or temp/humidity and
transmits the data at
418MHz to a Repeater
up to 100 feet away. The
optional temperature set­point and override status
are also transmitted at
418 MHz to the Repeater.
The transmit rate is ap­proximately once every
20 seconds with an
estimated battery life of 5
to 8 years.

Transmitter

Transmits the
Temperature,

Humidity,
Setpoint and
Override Info

418 MHz

Up to 100

Feet

Repeater

Receives the 418 MHz

Info from the Transmitter

and Re-Transmits it at 900

MHz up to 1,000 feet

900 MHz

Up to 1,000

Feet

900 MHz Receiver

Receives the Temperature, Humidity, Setpoint

and Override Info from the Repeater and

passes it on to the Analog Output Modules

Fig. 3: 900 MHz Wireless System

Analog Output Modules

Converts the Temperature,

Humidity, Setpoint and

Override Info into an analog

resistance, voltage, current

or relay for the BAS controller

The 418 MHz informa­tion sent by the Transmitter is picked up by the Repeater and then Re-Transmitted at 900 MHz to a 900 MHz Receiver up to
1,000 feet away. The 900 MHz receiver picks up the information from the repeater and then passes it along to the Analog Output
Modules. Each transmitted variable (temperature, humidity, etc.) is converted by a separate output module into an analog resis­tance, voltage, current or relay contact which is hard wired to the analog inputs of the BAS controller.

rev. 04/21/15

Customer Provided Tools and Materials

#2 Philips Screwdriver, 1/8” Screwdriver with 1/16” Allen wrench (BA/116W), Drill with 3/16” (4.7mm) bit

Specications subject to change without notice.

1 of 5

Wireless Room Temperature and Humidity Transmitter

(Units without Temperature Setpoint or Override)

Installation and Operating Instructions

17616_ins_wireless_temp_hum_xmtr

Analog Output Module Training

The installation process requires that each transmitter is trained to its associated
output modules so that they communicate with each other. Pushing buttons in a
dened sequence on the units will bind them together.

The training process is easiest on a test bench with the units within arm’s reach
of each other. Training can be done in the eld but requires two people and a
set of walkie talkies or cell phones. Be sure to place an identication mark on
the transmitter and associated output modules after they have been trained so
that they can be matched together at the job site.

The temperature and humidity variables each require a separate output module.
Perform the training sequence for each output module. Any transmitted variable
can be trained to more than one output module. If a Repeater is used in the
system, be sure it is powered and within reception range of the transmitter and
the 900 MHz Receiver to train the output modules.

TEMPERATURE OR HUMIDITY VARIABLE TRAINING

1. To train an output module to a temperature or humidity variable, select the

Resistance, Voltage or Current Output Module calibrated to the proper
temperature or humidity range and connect it to the wireless receiver. Note:
Multiple output modules can be trained to the same variable if desired.

2. Apply power to the receiver which will supply power to the connected output

modules. The power LED on the receiver will light and remain lit. (Current Output Modules
must have loop power supplied to the module itself before they can be trained.)

3. Remove the cover of the room transmitter and remove the battery tabs or install the batteries,

observing polarity as shown in Fig 3. Or open the cover of the BAPI-Box on non-room
transmitters and remove the battery tabs or install the batteries as shown in Fig 4. The “transmit
LED” will ash about once every 20 seconds, indicating a transmission. (The ash is very quick.)

4. Press and hold down the “Service Button” on the top of the output module (Fig 5) that you wish

to train. Then, press and release the “training button” (see Fig 3 & Fig 4) on the transmitter.
When the output module receives the “training transmission” from the transmitter, the output
module’s red LED will light steady. Release the “Service Button” on the output module and the
red LED will go out. The transmitter and output module are now trained to each other. During
normal operation, the output module’s LED will ash about once every 20 seconds indicating
data reception from the transmitter trained to it.

Note: Combination transmitters send both the temperature and humidity information when the “Training Button” is pressed.

However, each Analog Output Module is congured at the time of order as a temperature, humidity, setpoint or override
module and will only recognize the relevant data and will ignore the rest.

5.

Mount the transmitter at the desired location, removing the batteries if needed. (The units will remain trained to one another through
power failures and battery replacement.)

Battery polarity is
important or damage
to the unit may occur

Fig. 4:

Room Transmitter battery

installation and training

rev. 04/21/15

Training

Button

Transmit

LED

Output
Module
Service

Button

Fig. 5:
Output

Module

Mounting of the Room Transmitter

Provided

Drywall

Anchors

Provided #6 x 1” Screws

(80mm)

Fig. 6: Drywall Mounting

Note: The transmitter should have been trained to the output module at

this point of the installation.

Drywall Mounting

1. Place the base plate against the wall where you want to mount the sensor.
Typically 5 feet above the oor.

3.25”

Specications subject to change without notice.

2. Using a pencil, mark out the two mounting holes.

3. Drill two 3/16” (4.7 mm) holes in the center of each marked mounting hole.
Insert a drywall anchor into each hole.

4. Secure the base to the drywall anchors using the #6 x 1 inch mounting
screws provided.

5. Install provided batteries or pull battery tabs and follow polarity as shown
in gure 3 or damage may occur. The unit will work on just one battery
however the battery life will be cut in half.

6. Attach cover by latching it to the top of the base, rotating the cover down
and snapping it into place.

7. Secure the cover by backing out the lock-down screws using a 1/16” Allen
wrench until they are ush with the bottom of the cover.

2 of 5

Wireless Room Temperature and Humidity Transmitter

(Units without Temperature Setpoint or Override)

Installation and Operating Instructions

17616_ins_wireless_temp_hum_xmtr

Mounting of the 418 MHz Receiver, 900 MHz Receiver and Analog Output Modules

rev. 04/21/15

The 418 MHz Receiver, 900 MHz Receiver and Analog Output Modules can be
mounted in snap track, DIN Rail or surface mounted. The text and gures refer to
the 418 MHz Receiver, but the mounting process is the same for both receivers.

SNAPTRACK MOUNTING

Push in the blue mounting tabs on the bottom of the receiver and output modules.
These units will now t into the board slots of 2.75” snap track. Insert the receiver
at the far left of the snap track, then insert each analog output module and slide it
to the left until its connectors are fully mated into the receiver or the next analog
output module. You may attach up to 127 analog output modules to a receiver.

If your output modules cannot t in one piece of snap track, then mount another
piece of snap track nearby and insert the additional modules. Connect wires from
the right side of the rst string of modules to the left side of the second string of
modules on the second snap track. (See “Extending the RS485
Network” on pg. 5.) This conguration requires one or more
Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

DIN RAIL MOUNTING

Push out the blue mounting tabs on the bottom of the
receiver and output modules. These units will now snap
onto DIN Rail. Catch the EZ mount hook on the edge of the
DIN rail as shown in Fig 9. Then rotate into place.

Attach the receiver at the far left of the DIN Rail, then attach
each analog output module and slide it to the left until its
connectors are fully mated into the receiver or the next
analog output module. You may attach up to 127 analog
output modules to a receiver.

If your output modules cannot t onto one piece of DIN Rail,
then mount another piece nearby and attach your additional modules. Connect wires from the
right side of the rst string of modules to the left side of the second string of modules on the
second DIN Rail. (See “Extending the RS485 Network...” on pg. 5.) This conguration requires
one or more Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

Receiver & output modules mounted on DIN Rail.

Fig. 8:

Fig. 7:

Receiver

and output

modules

mounted in

snaptrack.

Fig. 9:

Catch the EZ Mount
hook on the edge of
the DIN Rail, then
rotate into place.

SURFACE MOUNTING

Push out the blue mounting tabs on the bottom of the receiver and output modules. Attach the
receiver to the surface by inserting a screw in each blue tab. Attach Analog Output Modules by
placing each one against the surface and sliding it to the left until its connectors are fully mated
into the receiver or the next analog output module. Attach each module to the surface with two
screws, one in each blue tab. You may attach up to 127 analog output modules to a receiver.

If your output modules cannot t in one straight line on the surface, then mount a second string
of modules nearby. Connect wires from the right side of the rst string of modules to the left
side of the second string of modules. (See “Extending the RS485 Network...” on pg. 5.) This
conguration requires one or more Pluggable Terminal Block Connector Kits (BA/AOM-CONN).

Wireless Temperature and Humidity Transmitter Specications

Supply Power: Two AA 3.6V Lith. batteries, 2.25 AH
5 to 8 year battery life at 20 second transmit rate

Inputs: Temperature - Thermistor
Relative Humidity - Capacitive

Accuracy: ±0.54°F (±0.3°C) / ±2% RH

Transmitted Range: -40 to 185°F (-40 to 85°C ) • 0-100% RH

Antenna: Built inside the enclosure

Environmental Operation Range:

Temp: 32° to 140°F (0° to 60°C)
Humidity: 5% to 95% RH non-condensing

Enclosure Material & Rating: ABS Plastic, UL94 V-0

Radio Frequency: 418 MHz North America

Transmitter Interval: ~20 seconds

FCC Approval #:

T4F061213RSO (418MHz Room Transmitter Only)
T4F060811TEMP (418MHz Temperature Probe Only)
T4F060811RH (418MHz Temp & Humidity Probe Only)
OUR9XSTREAM (Repeater Unit Only)

Compliance: This device complies with Part 15 of the FCC rules

Operation is subject to the following conditions.

1. This device may not cause harmful interference.

2. This device must accept any interference received, including
interference that may cause undesired operation.

FCC Radio Frequency Interference Statement:

This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15, Subpart B, of the
FCC Rules. This equipment generates, uses, and can radiate radio
frequency energy. If not installed and used in accordance with the
instructions, it may cause interference to radio communications.

Fig. 10: Receiver and output

modules surface mounted.

Specications subject to change without notice.

3 of 5

Wireless Room Temperature and Humidity Transmitter

(Units without Temperature Setpoint or Override)

Installation and Operating Instructions

17616_ins_wireless_temp_hum_xmtr

418 MHz Receiver and 900 MHz Receiver with Analog Output Modules Termination

rev. 04/21/15

418 MHz System

418 MHz Receiver

System Power Supply

9 to 30VDC or 17 to 31VAC

Power for the Power Bus can be
supplied to the receiver or to the

Analog Output Module on the far right

of the string of modules, but not to both

places.

The Power Bus must be connected to

the controller “-” power terminal.

Resistance

Output Module

The Resistive Thermistor Temp.

Signal is Polarity Sensitive to the

Controller and Must Have Less

than a 5VDC Bias Voltage.

Both “+” and “-” must be

connected to the controller

signal input and the negative “-”

connected to the power supply

negative “-”

Voltage

Output Module

Current Output Module

Requires loop power

before it can be trained.

0 to 5VDC or

0 to 10VDC

Analog Signal

Current Loop

Power

Supply

9 to 36VDC

4 to 20mA Current
Loop Signal to the

Controller

Relay

Output Module

Solid State Relay

40 VAC/VDC Max

150 mA Max

1 uA Leakage Max

RS-485 Bus

To Other Analog
Output Modules

Fig 11: 418 MHz Receiver and Output Module System Wiring

Termination Notes for 418 MHz and 900 MHz Systems:

1. The wireless receiver and Analog Output Modules are interconnected and require module power along the “Power Bus”
terminals. The bus can be powered from either the receiver end on the left or the last output module on the right side. Be sure
you have enough DC current or AC VA for all the devices on the bus.

2. The Current Output Module (BA/COM) signal is LOOP POWERED and must be externally powered with 9 to 36 VDC
separate from the Power Bus. The Loop Power must be connected to the Current Output Module before it can be trained.

3. Be sure to follow the polarity (+ or –) symbols listed on each receiver and the output modules to maintain communication and
Power Bus integrity.

900 MHz System

900 MHz Receiver

System Power Supply

9 to 15VDC

Power for the Power Bus can be
supplied to the receiver or to the

Analog Output Module on the far right

of the string of modules, but not to

both places.

The Power Bus must be connected to

the controller “-” power terminal.

Resistance

Output Module

The Resistive Thermistor Temp.

Signal is Polarity Sensitive to the

Controller and Must Have Less

than a 5VDC Bias Voltage.

Both “+” and “-” must be

connected to the controller

signal input and the negative “-”

connected to the power supply

negative “-”

Specications subject to change without notice.

Voltage

Output Module

0 to 5VDC or

0 to 10VDC

Analog Signal

Fig. 12: 900 MHz Receiver and Output Module System Wiring

Current Output Module

Requires loop power

before it can be trained.

Current Loop

Power
Supply

9 to 36VDC

4 to 20mA Current
Loop Signal to the

Controller

Relay

Output Module

Solid State Relay
40 VAC/VDC Max

150 mA Max

1 uA Leakage Max

RS-485 Bus

To Other Analog
Output Modules

4 of 5

Wireless Room Temperature and Humidity Transmitter

(Units without Temperature Setpoint or Override)

Installation and Operating Instructions

17616_ins_wireless_temp_hum_xmtr

Extending the RS485 Network between the Receiver and the Analog Output Modules

The Analog Output Modules may be mounted up to 4,000 feet away from the receiver. The total length of all the shielded, twisted
pair (TSP) cables shown in Fig 13 is 4,000 feet (1,220 meters). Connect the terminals together as shown in Fig 13. If the dis­tance from the receiver to the group of Analog Output Modules is greater than 100 feet (30 meters), provide a separate power
supply for that group of
Output Modules. BAPI’s

RS485 TSP Wiring RS485 TSP Wiring

VC350A-EZ Voltage
Conv. and a small
transformer are a perfect
solution.

rev. 04/21/15

Note: This conguration
requires one or more

Receiver

Pluggable Terminal
Block Kits for the extra
wire terminations on the
left and right side of the
Output Modules. Each kit
includes 4 connectors.

Pluggable Terminal Block

Kit (BA/AOM-CONN)

Fig. 13: Extended RS485 Network between the Receiver and the Analog Output Modules

Wireless System Diagnostics

Possible Problems:

Temperature or Humidity is reading
its low limit or high limit, or the LED
at the top of the Analog Output Mod­ule is blinking rapidly:

Analog Output Modules Analog Output Modules

BAPI

VC350A

EZ Voltage

Converter

Transformer

BAPI

VC350A

EZ Voltage

Converter

Transformer

BAPI

VC350A

EZ Voltage

Converter

Transformer

Possible Solutions:

- Check for proper wiring and connections from the output modules to the controller.

- Check to see if the controller’s software is congured properly.

- Check for proper power to the receiver, repeater (if used) and output modules.

- Retrain the Analog Output Module.

- Check that the associated transmitter is transmitting (the LED will ash about once
every 20 seconds when it transmits). If not, replace the batteries. Check that the
associated receiver is receiving the tranmissions (its LED will blink right after the
transmitter LED if it receives that transmission.) If it is not receiving the transmissions,
move it closer to the transmitter or reposition the antenna for maximum reception.
Note: The receiver will receive transmissions from all transmitters that are within
range, not just the one you are testing.

Temperature or Humidity reading is

- Retrain the Analog Output Module.

coming out the wrong output module

Temperature or Humidity reading is
incorrect

- Check for proper wiring and connections from the output modules to the controller.

- Check to see if the controller’s software is congured properly.

- Check to see if the correct output module is connected to the correct controller.

Analog Output Module Default Status when Wireless Transmission is Interrupted:

If an output module does not receive data from its assigned transmitter for 15 minutes, the red LED on the top of the module will
blink rapidly. If this happens, the individual Analog Output Modules will react as follows:

• Resistance Output Modules (BA/ROM) calibrated for temperature will output the highest resistance in their output range.

• Voltage Output Modules (BA/VOM) calibrated for temperature will set their output to 0 volts.

• Current Output Modules (BA/COM) calibrated for temperature will set their output to 4 mA.

• Voltage Output Modules (BA/VOM) calibrated for humidity will set their output to their highest voltage (5 or 10 volts).

• Current Output Modules (BA/COM) calibrated for humidity will set their output to 20 mA.

• Setpoint Output Modules (BA/SOM) will hold their last value indenitely.

• Relay Output Modules (BA/RYOM Units Only) will go to their default state (example: open for a normally open unit).

When a transmission is received, the output modules will revert to normal operation in 60 seconds or less.

Specications subject to change without notice.

5 of 5