The TB388 is a 24-hour mechanical timer switch designed to automate electrical devices on a daily schedule. It operates on 220V AC and is widely used for lighting, pumps, heaters, and other appliances requiring timed operation.
- Voltage: 220V AC
- Load Capacity: Up to 15A–20A (resistive); supports inductive loads
- Timing Range: Full 24-hour cycle with 15-minute interval settings (96 ON/OFF settings per day)
- Built-in Backup Battery: Maintains timing settings for up to 100–300 hours during power failure
- Operation Modes: Auto / Manual ON / Manual OFF
- Mounting: Suitable for DIN rail or panel mounting
- Drive Mechanism: Quartz-controlled for high accuracy (~±2 seconds/day)
- Durability: High mechanical life (millions of cycles)
- Applications: Ideal for water heaters, garden lights, signage, exhaust fans, and industrial equipment
