QDY30A-B 4-20mA Liquid Level Sensor For River deep well tank Control Level Transmitter 4-20ma 0-5V 0-10V RS485 0.5-4.5V

QDY30A-B 4-20mA Liquid Level Sensor For River deep well tank Control Level Transmitter 4-20ma 0-5V 0-10V RS485 0.5-4.5V

Aliexpress UK