Wireless Point to Point (WP2P)
RA2 Remote Control System
Quick Start Guide
Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 2
Key-switch open RA2 can operate Relay 1
Key-switch closed RA2 cannot operate Relay 1
RA2 - Handheld Remote Control System
The RA2 remote control system comprises a WP2P module and a RA2 handheld controller.
The RA2 is a small, handheld transmitter that operates up to two outputs of the WP2P module
over a range of around 20m.
The outputs are controlled from the two buttons labelled “A” and “B”.
Multiple RA2s can be used in any system.
For maximum flexibility, there are two operating modes and wiring options for the RA2 remote
control system. There is no selection required, it just depends on how you wire the output
relays.
Mode 1 – On/Off “latched” Control
The device to be controlled is connected to Relay #3 Output.
This is ideal for turning a single device (eg pump) on and off remotely.
Pressing button A on the RA2 will close Relay #3 and turn the device ON.
Pressing button B on the RA2 will open Relay #3 and turn the device OFF.
Mode 2 – Pulsed Control
The two devices to be controlled are connected to Relay #1 and/or Relay #2
This is ideal for opening two sets of electric gates remotely.
Pressing button A on the RA2 will close Relay #1 for 1 second.
Pressing button B on the RA2 will close Relay #2 for 1 second.
Lockout Function.
The optional lockout function provides a method of preventing RA2s operating the outputs.
An example is preventing staff opening one of two electric gates during weekends.
To lockout a function, install a suitable mechanical switch), to the corresponding input.
When the switch is closed the associated relay output will be locked out and not function.
Input #1 locks out Relay #1, Input #2 locks out Relay #2.
If this lockout function is not required, simply leave the WP2P modules inputs unconnected.
RA2 – Battery Notes
The RA2 is powered by 2x AAA 1.5V Alkaline batteries. Before using the RA2 please install
the supplied batteries.
To install or replace batteries, unscrew the 3 small Phillips Head screws from the rear of the
RA2 and remove the back cover.
Carefully install the batteries ensuring correct polarity and that the insulation strip between the
batteries is installed. Replace the back cover and the retaining screws. Do not over tighten.
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Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 3
The supplied AAA Alkaline batteries should, under normal usage, provide 3 to 6 months
standby operation.
The RA2 standby current is approx. 400µA, the transmit current is approx.. 28mA.
RA2 Battery Selection Notes
The RA2s are battery powered, low power transmitters ideal for short range applications. The
quality and capacity of the batteries used has an impact on the life expectancy and range. As
a minimum always use premium quality alkaline batteries. When selecting batteries, the
usage can be considered the same as a digital camera on the selection charts.
For frequent use applications, we recommend purchasing premium Lithium Ion AAA batteries.
While they are more expensive they have significantly better long term performance and will
need less frequent replacing.
WP2P Module - Power Supply Notes
Power Supply & Current Consumption
The WP2P module operates from a nominal 12 Volt DC power supply.
Current consumption is ~32mA in standby (no output relays active) to 49/66/83mA (one, two
or three relays active).
The WP2P module power connector is a 2.1mm DC Socket, centre pin positive. The supply
voltage should be clean, continuous and transient free with an output of 12 Volts +/- 1.5 Volt
DC. The WP2P incorporates reverse and overvoltage protection.
The absolute maximum supply voltage is 13.8 V DC and any solar/battery design needs to
take this into account.
Warning – Do NOT use Switch Mode Power Supplies (SMPS) with this product. The
DC power supply used for this product MUST have a grounded negative or be a
“linear” transformer based plug pack. The reason is that the aerial, programming port
and external connections can provide exposed earth points and the SMPS can impose
an AC voltage on the DC ground, which can lead to damage. Suitable cost effective
plug packs are available from QTech P/N PD5412, PD5413 & PD5414.
Internal Fuse
The WP2P module circuit is protected by a 20mm x 5mm 500mA fast blow fuse. This is
located on the internal circuit board. To access the fuse, remove the top cover by prizing it off
its retaining dimples. Only replace the fuse with an identical type, do not use alternatives.
This fuse will blow if the power supply maximum voltage is exceeded.
Over Voltage Protection
The WP2P module is over voltage protected by a 13 volt Zener Diode ‘crow bar’ that will
conduct and blow the internal fuse for voltages >14 volts. The WP2P will tolerate 13.8 volts,
but will begin to draw excessive current and blow the fuse at input voltages >14.6V.
Note – Solar Supplies and design considerations
Before using any WP2P module in a solar powered system please check our “Solar
Application Note” on our website. Explicit consideration must be given to the
maximum voltage and voltage regulation to prevent damage.
Installation and Operation Notes
Output Relays
The output relays (Labelled RLY1, RLY2 and RLY3) are normally open contacts that are rated
at maximum of 2Amps. The relays are internally protected by solid state snubbers for
operating with inductive loads.
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Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 4
Warning – Do not directly connect to 220V AC voltage. The New Zealand and
Australian wiring regulations require that any wiring in excess of 32 volts must be
carried out, or be certified by a registered electrician. Consult your local electrical
installer for further guidance.
Switched Inputs for Lockout Function
The inputs (Labelled INP1, INP2 and INP3) are electrically isolated, normally open inputs.
They are connected to suitable mechanical switches, contacts and other closure devices. An
input is active or ON when the input switch is closed and inactive or OFF when the input
switch is open.
Warning – Only mechanical switches or mechanical closure devices should be
connected to the inputs. No external voltage or other electrical source is to be
connected to the inputs.
Antenna Notes
The WP2P/RA2 system is a low power system that is designed specifically for operation in
New Zealand and Australia.
Each WP2P module is supplied with a stub antenna that will provide an operating range of 20
to 50 meters to the RA2, dependent upon terrain and obstacles such as trees and buildings.
All radio systems work most reliably when the path between the radios is clear “line of sight”.
This needs to be considered when planning longer range systems.
The aerial in the RA2 is contained within the handset. As the range increases, the position
and orientation of the RA2 handheld will influence the range.
An ideal operational height of the RA2 is greater than 300mm off the ground due to a radio
phenomenon called “ground affect”.
When mounting the WP2P module, ensure the aerial is vertical and as elevated as possible.
A minimum height should be 1m. If this Is not practical, please use an optional externally
mounting aerial which also helps maximise the range.
Warning – Do not operate the WP2P without an antenna attached. Do not
substitute antennas; use only those antennas recommended by your equipment
supplier. Failing to comply with these requirements can damage the WP2P.
Never operate the devices in violation of RSM conditions. AS/NZS 4268:2008 specifies
a maximum EIRP of 1 watt.
Mounting
The WP2P should be mounted onto a flat surface using the Qty 4x M4 fixing holes at
~102mm x 50mm centres. Where the WP2P is to be operated outside or in other adverse site
conditions, then, the WP2P should be housed in an appropriate plastic enclosure.
Note – If the WP2P is to be enclosed in a metal cabinet then an optional external
antenna will be needed. Please contact your equipment supplier for alternative
antenna details and advice.
Adjustments & Settings
There are no user settings or adjustments required.
Radio Address (RA)
All WP2P systems have a unique “radio address” which is programmed into WP2P modules
during manufacture.
The radio code is represented and specified in the following format “192.168.0.0”, it is a
security measure to prevent unauthorised users.
Note – All WP2P modules in a given system must have the same first three
numbers in their “radio address”. The 4th is 0 for the WP2P module and for the
associated RA2(s) is 1, 2,etc. The code is on the rear of WP2P modules and inside the
battery cover of RA2s. The radio code must be stated for purchasing of replacement
modules.
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Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 5
Using Multiple WP2P Systems in the same area
There are ten individual frequency bands referred to as “Channel numbers” allowing up to ten
WP2P systems to be used in the same location. The “Channel number” is identified by the “#”
on the packaging label; this example is “Channel #1”.
Warning – Do not use the same channel for adjacent systems.
For example, if you currently use “#1” ensure the adjacent system is “#3” etc.
Operational note – How do the modules communicate?
The WP2P RA2 system uses an “event driven” approach to communications. When either of
the RA2s buttons are pressed, that change is communicated to the WP2P module. The
WP2P module then sends a confirmation message back to the RA2 and then stops
transmitting.
This approach results in very fast response times and ensures very low power consumption.
Specifications may be subject to change
www.qtech.co.nz Tel: 03 3663713
Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 6
User Notes and Installation Details
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Wireless Point to Point – RA2 – Quick Start Guide – v1.1 – February 2014 7
User Notes and Installation Details
www.qtech.co.nz Tel: 03 3663713
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