Note Please check carefully, one just has one output, the other has two output. There has 2 keys 3 keys, -50~110C with NTC senosor , 0~450C with K type probe, please check carefully before order. Thank One Output Description Temperature measuring/control range NTC sensor: - 50 ~ 110C K type sensor: 0~450C ( Please choose the one you need ) Temperature measuring accuracy: +/-0.2 C Temperature control precision: +/- 0.1 C Measuring input: NTC10K L = 1 meters waterproof probe Input power: AC 110-220V / 12V / 24V Output power: AC 110-220V / 12V / 24V ( Depends on the one you choose ) Output Type: Direct Output Output Capacity: MAX 10A Appearance size: 60 * 45 * 31 mm Wire Connection Two Output Specifications Independent Dual-way temperature controller. Heating or cooling control All parameters setting can be saved after short circuit. Directly power output. Can be used for domestic freezer, water tanks, refrigerator, industrial chiller, steamer, industrial equipment and other temperature-controlled system. Features Power Supply:12VDC24VDC110V-220VAC ( Please choose the one you need ) Control range: -50~120C Resolution: 0.1C(-9.9-99.9); 1C(other range) Accuracy: 0.1C Refresh rate: 0.5S Sensor 1 2: NTC10K Waterproof sensor each Output 1 2: Max 10A directly output each Working temperature: -10-60C , humidity 20% -85%RH Size:100mm(L)*55mm(W)*32mm(Depth) Cutting size: 75(L)mm*55(W)mm M3 screw hole Power consumption: Static current: 35MA,attract current: 65MA KT99 230V with 1.5m waterproof sensor KT99 (direct output) 230V with 1.5m waterproof sensor -50~120C KT99 (direct output) 120V 1.5m Waterproof sensor -58~248F Wire Connection