Buy it online: [ Ссылка ]
The relay featured in the video is suitable for monitoring undervoltage and overvoltage at DC 12V, AC/DC 24-48V or AC/DC 110V-240V. Compact in size, it's designed with 1 CO & 1 NC contacts and LCD real-time indicating lights for fault alarm or to show working status. The device adopts DIN rail mounting with adjustable delay time.
Ещё видео!