Salus SG888ZB System Manual page 25

Section 4
The AS20WRT Thermostat can be paired with four types of devices:
Display Code
(Default)
Note: Older firmware
may display "UF H"
instead of "rL AY"
Device Pairing & Setup
with Internet Connection
AKL01PRF – 1 Zone
Pump Wiring Center
AKL04PRF – 4 Zone
Pump Wiring Center
AKL06PRF – 6 Zone
Pump Wiring Center
AKL08RF – 8 Zone
Valve Wiring Center
ARV10RFM –
Radiator Valve
AX10RF System Receiver
configured (RX1) Boiler
Operation
AX10RF System Receiver
configured (RX2)
Zone Valve
SALUS Model
4 .4