User Manual

L.R. Nelson Corporation
One Sprinkler Lane
Peoria, IL 61615
OEM Manual
8602 Radio Module
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21
43
65
12
34
56
+5VDC
Master/Slave Pin
GND
Pro - RX Radio - TX
Pro - TX Radio - RX
SRDY
EZ Pro/Command Side Radio Connector
ELECTRICAL INTERFACE
Power
Radio requires a regulated source of 4.5-5.5 volts DC at a maximum current of
170mA.
Communications interface
The serial link data-rate is 9600 baud, 8 data bits, 1 stop bit, no parity.
Communications signal path is 5V TTL level only.
PINS
TX, RX & GND – Self-explanatory.
5VDC – max current required by the radio (see above.)
SRDY – When pulled low, the radio is ready to serially communicate with its host.
Master/Slave- Slave radio is defined as that which is configured with its
Master/Slave pin set to logic 0. Master radio is defined as that which is
configured with its Master/Slave pin set to logic 1. The EZ Pro or Command Side
(Host) sets logic for either case.