Tuya WiFi Intelligent Constant Temperature Controller LED Display Adjustable Temperature Controller Compact Size Water Gas Boiler Temperature Controller Compatible with Amazon Alexa and Google Home APP: SmartLife/Tuya VoiceControl: Amazon Alexa, Protocol: 2.4G Wi-Fi Temperature sensor: NTC Temperature accuracy: ±1°C Temperature lag: 0.5~10°C Temperature correction: 0.1°C Minimum temperature setting: 0.5°C Temperature upper and lower limits: 15~95°C Self consumption:<170uW Load current: 3A (negative) Protections level: IP20 Main color: white Main material: ABS Battery: 3 * AA battery (Not Included) Item size: 86 * 86 * 28mm / 3.4 * 3.4 * 1.1in Package size: 100 * 95 * 65mm / 3.9 * 3.7 * 2.6in Package weight: 263g / 9.3ounce