Electronic timer, suitable for automatic control of street lights, neon lights, billboards, production equipment, televisions and other electrical appliances. Real-time display function, 24-hour or 7-cycle programming days, reset button, mounting method: rail mounting. Auto-lock: Whenever no entry is made within 15 seconds, the timer is automatically locked. Effectively prevent accidental contact and implement safety protection AHC15A Timer Relay: Easily set up to 16 independent on/off schedules, time range from 1 minute to 7 days. Design of the Dustproof Flip Cover: Raised soft rubber keys are clear, concise, beautiful and easy to operate. The flip cover design can keep dust out and prevent accidental touches from interfering with settings.