WellAWARE Systems ZTTRX433 User Manual

ZT-TRX433 Multi-use 8-bit Transceiver

The 8-bit Transceiver is used in the Impact Sensor and the Bedbox to send data. This unit senses
when the state of any of the 8 I/O pins change and sends the status of those pins. When any I/O
pin’s status changes the status of the pins are sent.

Features

• 50ft wireless range

• Adaptable to many

applications

• 433MHz wireless radio

• 8 pull-up inputs

• Connected to PIC16F687

Requirements

• 2.3V - 3.6V input

• 20 pin 2mm header

connection

• Sending: Avg: 10mA,

MAX: 20mA

• Idle Avg < 70uA

Dimensions 65 x 25 x 8 mm

2.56 x 1.0 x .32 in

Figure 1: Side View and Bottom View

To I/O

To PIC

•

TRX transmit

• The TRX waits for an acknowledgement.

• Device sends the RF signal to Controller. Controller decodes the

RF signal and relays to PC.

• Device shall receive ACK signal from Controller.

• If Device does not receive ACK signal more than 0.5 second, it

will re-send RF signal again.

• PC will check the Device Type and Address. If they match with

the data stored in PC, PC will send ACK instruction to the
Controller.

• If Device re-sends RF signal additional 2 times and it does not

receive the ACK signal, it stops sending any RF signal until next
event.

+

U1 3.3

R1 47k

C1 10n