Product description A compact defrost timer that delivers reliable, energy efficient control for refrigerators and freezers. It manages end of defrost reset, precise temperature regulation, and automatic defrost heater triggering for consistent performance. End of defrost reset: When defrost heating ends, the timer resets or starts a compressor time window to prepare for the next cycle. Temperature control: Built in defrost thermostat maintains a safe defrost temperature. When the target is reached, the heater power is disconnected promptly to prevent over or under defrosting and preserve overall performance. Cumulative compressor time: The timer records total compressor runtime to determine when the defrost program should start. Defrost start trigger: After the preset compressor time is reached, an internal switch outputs a signal to start the defrost heater. Why it matters Improves frost management, protecting stored food and reducing manual defrost needs. Enhances energy efficiency by aligning defrosts with actual compressor activity. Simple integration with most standard fridge/freezer models; compact form factor supports long life. Use scenarios Home kitchen refrigerator or freezer that experiences periodic frost buildup. Commercial display cooler or bakery case that requires reliable, lowmaintenance defrost control. RV or apartment fridge where space is limited and predictable defrost timing matters.