Features: The shell of our thermostat is made of high-quality plastic material with fine workmanship, environmental-friendly, safe, durable to use. Its temperature controlling range is from 0° to 60°, perfect for using to control heater, filter fan, cooling equipment and other signal device in your home, market and so on. It has a large data scale and an adjustable button is for easy and convenient to adjust the controlling temperature, and the button color(red/blue) of thermostat could be choose for you. Adopting standard rail clip design, 4 feet holders, easy to install and disassemble. Circuit interfaces in the bottom of thermostat can make wire connection become more sturdy and safer. KTO 011: heat Thermostat (normally closed); contact breaker for regulating heaters. KTS  011: cool Thermostat  (normally  open);  contact maker for regulating of filter fans and heat exchangers or for switching signal devised when temperature limit has been exceeded. Specification: Switch temperature difference: 7K (± 4K tolerance). Sensor element: thermostatic bimetal. Contact type: snap-action contact. Service life: >100,000 cycles. Max. Switching capacity: 250VAC, 10 (2) A; 120VAC, 15 (2) A; DC 30W. Connection: 2-pole terminal, clamping torque 0.5Nm max.: rigid wire 2.5mm⊃2; stranded wire (with wire end ferrule) 1.5mm⊃2; Mounting: clip for 35mm DIN rail, EN60715 (or for exit filter EF 118 Series). Casing: plastic according to UL94 V-0, light grey. Dimensions: 60 x 33 x 43mm. Weight: approx. 40g. Fitting position: variable. Operating / Storage temperature: -45 to +80°C (-49 to +176°F).