HK-120 electric mattress thermostat by QiufengCheng uses a heating wire in a mica-style heater and runs on 220 V with power under 800 W. It is freestanding and combines an adjustable thermostat with overheat protection, ventilation and deodorization, and a waterproof design. Suited for bedroom and living room use and for small spaces up to about 20 m². Certified to CE, RoHS, EMF and CB standards.