... .6VDC 350mA Output:RS485,4~20mA Ultrasonic Level Meter BS/CS Series Small Blind Precision Ultrasonic Level Sensors----high ... characteristics: 1, non-contact measurement, environmental protection, safety, convenience. 2, split design, elegant appearance, convenient installation. 3, can be ... computer or PC software, networking, a host can be 2 to 128 extensions on the network inspection (optional) 7, ...