Features Temperature Controller Control of two devices by one thermostat Specification Working voltage: 110-220V AC Temperature measuring range: -55°C ~ +120°C Resolution: 0,1 Measure accuracy: 1°C Relay contact current: 10A/220V AC Temperature sensor: NTC10K (cable 1 meter) Data save: yes Working temperature: 0°C ~ +50°C Storage temperature: -10°C ~ +60°C Package contains: 1 x STC-3008 Thermostat(With probe cable) 1 x Manual temperature setting Long press UP button for 3 seconds, display no. 1 flashes, press UP or DOWN button to set start temperature (25°C default) Long press DOWN button for 3 second, display flashes, press UP or DOWN button to set stop temperature (40°C default) Long press UP button for 3 seconds, display no. 2 flashes, press UP or DOWN button to set start temperature (25°C default) Long press DOWN button for 3 second, display flashes, press UP or DOWN button to set stop temperature (40°C default) Press "Down 1" and "Down 2" buttons at the same time, factory setting is restored Heating Mode--Start temperature Cooling Mode--Start temperature > Stop temperature