Feature: 1. The timer switch is a large-screen display with LCD backlight, which can be used in a variety of situations. 2. Equipped with a built‑in battery and can be replaced at any time, so there is no need to worry about the trouble caused by no electricity. 3. With high intelligence, 24‑hour intelligent analog timing, the time range is 1min‑168hrs. 4. Realize the intelligent management of household appliances through the on‑off timing operation of various household appliances. 5. The programmable time control switch is suitable for automatic control of neon lights, advertising signs, production equipment and other power equipment. Specification: Item Type: Rail Timer Switch Material: ABS Model: TM928SBK Display Mode: LCD backlight Working Voltage: 85-265VAC Load: 30A Power Consumption: <5VA Time Range: 1min-168hrs Power Failure: 90 days Program: 96 times a day ON/OFF Average Error: <±2 seconds/day Temperature Range: -10-50℃ Humidity: <95% Installation Method: DIN RAIL Battery Parameters: Built-in button battery CR2450 3V 520mAh. Package List: 1 x Rail Timer Switch1 x English User Manual Note: Please use it within the voltage range of 85‑265V.