Application: Refrigerant kitchen refrigerator, refrigerant cabinet, direct-cooling and air cooled kitchen cabinet, cake cabinet with stainless panel.   Main features: Temperature setting by wave-brand switch knob, Visual panel display, easy to operate. Flame retardant material, Fully sealed rear shell, Polycarbonate front panel, Water-proof level up to IP65 Internal relay whose output is 30A able to drive single-phase compressor 1.5HP or lower, convenient for user to install.   Specification: Mounting size: 112(W) * 39(H) (mm) Product size: 137(W) * 56(H) * 69(D) (mm)     Power supply: 220VAC+-10%, 50/60HZ Temperature measuring range: -40~+90 C Resolution: 1 Accuracy: +-1 C Compressor, defrost output contact capacity: 30A/240VAC (the max load can drive is 1.5HP) Sensor type: NTC, 2M Temperature controlling level: 0-7 level (OFF is to close controller) Shell: gray ABS flame retardant material (Different specification and series of controllers have different temperature controlling range)   Temperature range  LTC-20 10C~-5C  LTC-21 0C~-10C  LTC-22 4C~-15C  LTC-23 -2C~-18C  LTC-24 -8C~-25C  LTC-25 10C~0C  LTC-26 -6C~-16C