Temperature sensor recommend: Dual Digital PID Temperature Controller Thermostat Kit REX-C100 with SSR-40DA heat sink quality K probe Thermocouple There has 5 sets, please check the picture carefully and choose the one you need. This is a bid for a dual display universal digital programmable temperature controller that supports many type of thermocouple sensor . Model : REX-C100 PID control Power Supply:100V~240V AC Display: Dual display for Celsius (C) Range: -0-400C (Only when with the factory K type thermocouple) Accuracy: 0.5% SET 1, SET 6 Program to support ONLY the type thermocouple: K SET 2, SET 3, SET 4, SET 5 Program to support many type thermocouple: K,J,S,E,R,Wre3 ~ Wre25. Thermo Resistor: PT100, Cu5 Main Output: SSR PID cooling/heating control 1 RELAY alarm: Normal open, capacity 250V/3A AC or 30V/3A DC 7 different Dual Output combinations with: high / low / high deviation / low deviation /interval / out of interval / breakage alarm Inp> P, I, d, controlling period, digital filter coefficient, and more Compact design:DIN 1/8 great form-factor to be included/build-in to your product. Input: TC(K, J, S, E) / RTD (Pt100, CU50) universal input, or 0-20mA signal.( please choose the one you need ) Control output: SSR Dimension: DIN: 1/16 (48mm x 48mm x 110mm) Weight: about 200g Attention: some other seller use fake SSR40A with very cheap price but le than 10A in fact. Note: if you don't need the heat sink, pls order the following link. Dual Digital PID Temperature Controller REX-C100 with thermocouple K, SSR 40A , SSR-40A Wire connection