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SMT-80RF Wiring Examples
The SMT-80RF is a 2-part controller that consists of a battery
powered controller and a 24VAC powered receiver. The two
parts communicate with each other via radio frequency
(433MHz).
The battery powered controller measures the temperature of
the room that it is in and transmits data to the receiver
module fitted in the heating and cooling system. This permits
you to move the battery powered controller from room to
room should you wish.
Note 1 – If moving the battery powered controller do not place
it on any warm or cool surfaces as this will affect the comfort
of the room.
Note 2 – The maximum distance the battery controller can be
from the receiver is typically 30M indoors.
Pairing the Controller and Receiver
Your Controller and Receiver should be "pre-paired" when
you receive them. If for any reason you need to re-pair the
units, the steps are detailed below. This may be necessary
when you have multiple SMT-80RF in close proximity to each
other to permit you to select different transmission channels
for each paired unit (as indicated in step 4 below).
1
Ensure you have 2 "AA" alkaline batteries fitted to
the SMT-80 Controller and it is powered on.
2
Ensure the SMT-80 Receiver module is powered on
being hardwired with 24VAC. (The amber data link
will blink a heartbeat).
3
Press and hold both the [Up] and [Light /Fan] buttons
on the SMT-80RF Controller until the display changes
and shows the currently selected channel number.
4
If you wish – adjust the channel with the [Up] or
[Down] button. (If you have multiple units in your
home or office they should all have a different
channel number)
5
Press and hold the [Pair] button on the Receiver until
the green pair light blinks.
6
Press the [Fan] button on the SMT-80 Controller to
initiate the pairing process.
The SMT-80 Controller will show the RF signal confirmed icon
on the display and the green paired LED will remain
ON solid when the units are paired.
When data is being passed between the Controller and the
Receiver the amber "data" LED will flash.
SMT-80 and SMT-80 RF Manual – Version 1.0
© Smart Temp Australia. 2020
www.smarttemp.com.au +61 3 97630094
Receiver Module Wiring
The
SMT-80RF
Receiver
module
should be mounted
in
a
clean,
dry
location and within
30M
of
the
proposed Controller
location. (Note - the
range varies based
on environment)
Avoid placing the Receiver module inside an earthed metal
case such as a gas heater enclosure as this will significantly
reduce the RF signal range.
SMT-80RF Troubleshooting
No LEDS on Receiver module
Check 24VAC power supply is in the CR terminal
Poor Range
Check Receiver location
Ensure Receiver not mounted inside metal enclosure
Check SMT-80 batteries
Check for other strong RF signals that maybe close
Pairing Process Fails
Remove batteries and power down receiver for 5
minutes and try again
Green LED Off / RF Signal Icon Blinking
See Poor Range (Above)
Try "Re-Pairing" the SMT-80 with Receiver module
Amber LED Rapidly Blinking
This is normal - data is being transmitted / received
SMT-80RF Receiver Module Terminal Identification
C
24V Neutral
R
24V Active
Rly Com
Input to all Relays (Typically Looped to "R" Above)
W/OB
Heat (HC Mode) or Reversing Valve (HP Mode)
Y
Cool (HC Mode) or Compressor (HP Mode)
G
Fan
T T
Used for Supply Air Sensor in Damper Control Mode
SMT-80RF Receiver Module Specifications
Power ........................................................... 24 VAC +/- 15%
Relay Rating .......................................................... 5A @240V
Accuracy .................................................................. +/- 1.2⁰C
Size ............................................................ 140 x 88 x 40mm
Environmental ............................................................... IP20
Warranty .................................. 36 Months (Return to Base)
Plastic ......................................... ABS /Poly Flame Retardant
Certification .................................................. CTick(Australia)
www.thermostat.com.au
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