Performance principle: to make the thermostat temperature working fluid within the Ministry to produce the corresponding thermal expansion and contraction of the physical phenomena (working fluid volume change) when the object to be controlled temperature changes, together with the temperature sensing portion of the communication bellows produce expansion or contraction. Through leverage, driven by the switch-off operation, to achieve the purpose of constant temperature. WG series of liquid expansion type thermostat with temperature control accurate, reliable, small-OFF temperature, temperature adjustment range Two, F2000 mechanical freezer thermostat uses Mainly used for electric equipment (stainless steel automatic water boilers, embedded oven, electric frying pans, food machinery, medical equipment), refrigeration industry (kitchen freezer, fresh cabinet, refrigerator, ice machine, fish pond, cold drink machine, Heating temperature machine) appliance control. Three ,, F2000 mechanical freezer thermostat technical parameters: 1, electrical performance: 16 (3) A-250V ~ 10 (1.8) A-400V ~ 2, off temperature: According to user requirements, design temperature range (-35 C ~ + 450 C) 3, the product life:> 10 million times 4, the electrical strength: AC2000V / 1min 5, normal insulation resistance: >100MΩ 6, the contact resistance: 10MΩ 8, the temperature response rate: