Take control of your schedules with our high-quality Timer Relay Switch! Features: - Supports 16 ON/OFF groups per day with one-button automatic function. - Cycle day/week settings for personalized scheduling. - Two-way control: Switch 3.4 is normally open, Switch 3.5 is normally closed. Connected as dual control switches for enhanced flexibility. - Durable Construction: Made from high-quality, durable hard plastic. Rust-proof, corrosion-resistant, and high-strength for maximum durability. Smooth, burr-free surface for a comfortable feel. - Strict Quality Control: Enhanced design for extended lifespan. Applications: Automatically turn equipment ON/OFF according to a set schedule. Advanced preset functionality up to one week in advance. Easy DIN rail installation. Widely used for controlling lights, water heaters, sprayers, dispensing machines, pre-heaters, agricultural facilities, broadcast equipment, home appliances, and more. High Precision & Stability: Features an industrial chip for accurate rest time with minimal error. Daily rest time error of less than 2 seconds. Built-in rechargeable 1.2V/40mA battery for power backup (maintains time display and data storage for over 6 months when disconnected). Separate time control and charging circuits for efficient functionality. Passive output for signal monitoring. 100% Satisfaction Guarantee: Your satisfaction is our top priority. Contact the seller immediately for any product issues like damage or incorrect quantity for a satisfactory customer service experience.