This 7 day digital programmable timer is ideal for use in any 12V DC appliance which requires automation. It can be configured to switch at up to 16 different times during a 24 hour period. In addition, it can be programmed to operate on a wide variety of days. eg. Daily, Week days only, Weekends only, Every second day, or selected group of days.The BRX12A25K3 allows for Switch-on and switch-off times to be set for each program. i.e. allows a different on duration for each program.The timer has three modes of operation. In the auto mode, the timer automatically switches at the pre-programmed times. In the on mode, the switch is always on regardless of the timer program setting. In the off mode, the timer will not switch regardless of the program settings. The mode of operation can only be changed when power is applied to the switch.3 CHANNELS TIMER. CONTROLS 3 INDEPENDENT DEVICES WITH INDEPENDENT SCHEDULES.In the event of a power failure, the switch retains its program data via backup battery.- Voltage: 12V DC- Max Total Load: 8A Resistive/Channel- Standby consumption: 0.03A- Dimensions: 120mm x 72mm x 50mm- Weekly & Daily Programming.- Timing Control Range: From 1 minute to 168 Hours- Up to 16 events per day or 112 events per week. Example: You can set 1 ON & OFF event to repeat the 7 days of the week and you will be using only 1 out of the 16 events allowed.- 16 ON and 16 OFF events can be programmed independently.- Accuracy: <±2 seconds per day- Operating temperature: +10 ~+50 C- Relative Humidity: 95%- Guide Rail & Wall mounting & Panel- Battery backup- Manual override eliminates the need for an additional helm switch.- A 8A fuse per channel is strongly recommended for each installation as it will assure a long life for the timer as it will avoid overload of the system.We ship worldwide. - Hablamos Español. - Nous parlons Français.