Timer switch. Timer switch,time delay relays,program timer switch. 1.Classification: Timer 2.Model: SUL181H 3.Contact capacity: AC230V 16A 4.Full timing range: 24h 5.Contact resistance: ≤50m 6.Insulation resistance: ≥100m 7.Coil voltage: 110,230VAC 8.Operating temperature:-40°C +55°C 9.Sto nage battery(working reserve): Time 150h 10.Minimum seting unit:30 Minutes.