unctions: Large-screen displays, user-friendly design, simple and practical. The shell is made of flame-retardant materials, safe and reliable. Input voltage: 220V + / -10% Set the temperature: 5 °C -35 °C Measuring temperature: 0 °C -40 °C Relay contact capacity: 16A/250VAC Shell material: flame retardant PC Specifications: Voltage: 110(± 10%)VAC / 220(± 10%, -15%)VAC, 50/60Hz 24VAC ( option) Differential Temperature: 1 ° C Max Setting Temperature Range: 5° C~35° C External Limitation: 5°C~60°C( factory setting 35°C) Mounting: Mounts directly onto wall or wall-box Temperature range: 0° C - 40 ° C Sensor type: NTC Color: White ivory Relative humidity: < 85% (23 ° C) Housing material: anti-flammable PC Dimensions: 86mm 86mm 13mm(H/W/D )