Features 1.Intelligent and digital led timer 2.1~4 channels, programmable and arbitrary combination and arbitrary output 3.Memory storage (10years) / mechanical life 4.Wide timing range (1millsecond~9999days) 5.Power supply (220v ac 50/60hz) 6.Capable of maintain timing in power-off state 7.100 groups of programme/time periods Additional jump function, the number of cycle is settable