YX63121H33 Liquid Level Relay | Water Supply & Drainage Control with Delay Function

Description:
The YX63121H33 Liquid Level Relay is a precision control device designed for automatic water supply and drainage systems, with an integrated adjustable delay function. It monitors the liquid level and activates relay output only after a preset delay to prevent false switching. Ideal for domestic water tanks, sewage systems, industrial liquid control, and smart plumbing installations. Supports AC/DC 24–240 V operation, adjustable sensitivity (5 kΩ–200 kΩ), and stable switching at 5 A / 240 V. 

Key Features:

• Controls both water supply and drainage modes

• Delay time adjustable (0.1–30 s)

• Sensitivity adjustable (5kΩ to 200kΩ)

• Compact and reliable for tanks, wells, reservoirs

• LED indicators for status

• Prevents frequent switching in fluctuating liquid levels