Salus Optima S User Manual page 27

Optima S Thermostat
If the SS909ZB had previously joined the network, but is not paired with the Optima S:
1) Place the Optima S in Identify mode (step 2 above).
2) Place the SS909ZB in pairing mode:
a) Hold the network button on the side of the sensor for 3 seconds until the LED
turns Red
b) Within 2 seconds of the LED turning Red:
i) Release, press, and release the network button on the sensor.
ii) The LED on the Sensor will flash 3 times, pause, and repeat
iii) When the LED on the Sensor stops flashing it will have paired with the
Optima S
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