Output:Relay output or DC voltage output for SSR (Please note: SSR output or relay output are used for temperature control, it only be activated when measure temperature value lower than set temperature value , they are independent from timing.) Temperature range:-20 to 600 Celsius Temperature unit:Celsius degree / Fahrenheit degree(user can program it inside) Time Unit:Second or minute (user can program it inside) Time range:0-999s or 0-999min Power supply:100V-240V AC Colour:Black Material:ABS+Metal Size:72x72x26mm,Mounting hole cutout size:68x68mm Package Contents: 3 x Temperature controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.