York Hx 3 S1-THXU280 User's Information Manual

5407935-UUM-E-10204 Johnson Controls Ducted SystemsFeaturesThe following table describes the main features of the Hx 3 TouchScreen Thermostat.Feature DescriptionControl of heatingand cooling outputs Uses RS485 modbusIndoor temperaturesensing > 0.5°F accuracy from 60°F to 90°FRemote sensor Connects to a standard 10k NTC thermistor(P/N: S1-02542683000)Humidity sensingand displayOperates cool-to-dehumidify functionality anddehumidification/humidification functionality incommunicating systemsPresence detection Activates backlight when the thermostat sensordetects user presenceNear Field Communi-cation (NFC) function-alityUsed for passive/active limited data transferWi-Fi connectivity Supports 802.11 a/b/g/n standards and utilizesa Broadcom chipsetCloud connectivity Apple iOS and Android app available for usersmartphone or tablet controlOptimized installationSpring-loaded connectors that accept 16–24AWG wire. A screwdriver is not required for wireinsertion and removal.Optimized boot time 3-second boot time before temperature is dis-played and the thermostat is fully operational4.3 in. TFT 320x240QVGA color display Enhanced 80° viewing angle in all directionsRS-485communications bus For modbus communication protocolsOver the Air (OTA)functionality Can reprogram the board functionality Wi-Fi