Usage Tips:TC-220 0-50C Day/night ON OFF Digital Reptile Thermostat with Timer Regulator Animal Amphibian Temperature Controller Model: TC-220 Attention please: The color options meaning, for example "EU 220V 10A Relay": "EU" means the product comes with European plug and socket "220V" means the power supply of the controller; In fact, it can fluctuate 220V15%. "10A relay" means Maximum Switching Current of the relay. "US" means the product comes with United States plug and socket If you choose wrong option, you have to be at your own risk Features: Blue tape LCD display, simple operation Temperature adjusted per 0.1C Two timers can be set during 24 hours Uses a inbuilt real-time clock to control the light so simulating the day and night as in the real environment Can be set with a separate day and night for time temperature Three kinds of temperature alarms, mute function available Can be used in both wet and dry environments Backlight auto shut down if without operation for 10 minutes Small in size making it stylish and discrete Parameters: Controlling range: 0.0~50.0C Measuring range: 0.0~50.0C Resolution: 0.1C; Accuracy: 1.0C Over heat alarm: 0.0-5.0C(can be modified) for Time unit: hour (24:00 format) Product consumption: 3 Two independent sockets First socket I is for heat/cool output; Second socket II is for the timer output (for lighting for example). The current of the load must be : inductive load or filament lamp10% of the current on the wiring diagram; resistive load50% of the current on the wiring diagram.wiring diagram is on the back of the product. Package Included: 1 x Thermostat 1 x user manual