Product Description: Modern Touch Screen Room Thermostats are designed to on/off control the fans and valves in air conditioner applications via comparison of the room temperature and setting temperature as reaching the aim of comfort and saving energy. Model Definition: A1:Two pipe; Control Fan Coil Unit and Two wired Motorized valve.(when room temperature reaches the setpoint, both will turn off) A2: Two pipe; Control Fan Coil Unit and Two wired Motorized valve.(when room temperature reaches the setpoint, valve will turn off but fan will turn to low speed) B: Two pipe; Control on/off Motorized Damper C: Two Pipe; Control Fan Coil Unit and Three wired Motorized valve M: Two pipe; Control 0-10V Motorized Valve P: Weekly Programmable Specification: Sensor：NTC Accuracy：±0.5℃ Temp. Range：5 -35℃ Power Consumption：<1.5W Timing error：<1％ Power Supply：110~240V, 50 ~60Hz Current Load：1A（Inductive）， 2A（Resistance） Shell Material：PC+ABS（Fireproof） Ambient Temp.：0 ~ 45℃，5 ~ 95％RH(Non condensing） Storage Temp：-5~ 55℃ Dimension：3.38x 3.38 x 0.52 inches(86x86x13.3mm) Item Weight: 8.39 ounces How to connect to wire 1. Please refer to the wiring as the foto in the manual(Two Pipe System). Terminal 9 is “Hot”, 8 is Neutral(All Neutral are connect to here,include the fan e motorized valve), 7 is high speed, 6 is middle speed, 5 is low speed, 4 and 3 depends on the wires of your motorized valve. If it is 3 wires, 4 is valve on and 3 is valve off; If it is 2 wires normally open motorized valve, you just need to connect valve open; If it is 2 wires normally closed motorized valve, you just need to connect valve close. it's work with central air conditioning. you can contact me,we will send you wiring diagram
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