1、Thermostatic Heating: PTC heating element utilizes ceramic thermostatic heating technology to continuously output heat and automatically work at a constant temperature. 2、Insulation and Heat Resistance: This 220V PTC heating element uses polyimide film to wrap the chip inside, which is insulated and heat resistant. 3、Fast Heating: PTC quickly converts electrical energy into heat after power on, and conducts to the surface of aluminum shell within 10s, so it can be dry fired for a long time 4、Long Lasting Use: The aluminum PTC heating element can work 7x24 hours without interruption and provide heat source continuously for more than 20,000 hours. 5、Applicable: PTC thermostat heating element has no open flame, no redness, no toxic and harmful gases, and is suitable for use in wet environments. 5 x PTC Heating Elements Item Type: PTC Heating ElementMaterial: Aluminum Alloy, PTC, Polyimide FilmHeating Material: PTC Ceramic HeatersLead Wire Material: High Temperature Resistant WireShell Material: Aluminum ShellSize: Approx. 35 x 15 x 5mm/ 1.38 x 0.59 x 0.20inLead Wire Length: Approx. 15cm/ 5.9inUse Voltage: 220VTemperature Error: ±10℃