Item Type: 24 Hour Mechanical Timer Material: ABS Model: SUL181h Battery: 1 x Rechargeable NI MH 3.6V 80MAH button battery (built in) Contact Capacity: AC230V 16A Time Range: 24h Contact Resistance: 50m Insulation Resistance: 100m Coil Voltage: 230VAC Ambient Temperature: -40 to +55 Storage Time: 150 hours Minimum Setting Unit: 30 minutes Setting Times: 30 minutes per time, 48 times Package List 1 x 24 Hour Mechanical Timer 1 x Manual 148 Times Settings: The timer is programmable in 30 minute intervals, has 48 times setting options in 24 hours, re arrangeable for individual settings 2Waterproof: The timer is equipped with protective cover, which is waterproof, protecting the timer from weather conditions, more secure for outdoor use 3Safe and Durable: The mechanical timer is made of excellent ABS material, with two ground sockets, safe and durable 4Simple to Use: Always turn the timer dial to the current timer first, push the pins down to set the time on, pull other pins up to set off 5Built in Rechargeable Battery: The timer has built in rechargeable battery, can be used for long time after once full charged