Ultrasonic Sensors with 20 Foot Range (1 Transmitter and 1 Receiver), 40Hz Frequency, 2000pf Capacitance (16mm x 12mm) it is a fully functional

it is a fully functional bell with an impressive ringing sound that can be heard from a long distance away

Display back light

5" x 8" x 3

962 comes equipped with the same I/R (infrared) and AI (artificial intelligence) technology that made the older version a fan favorite

Volume can be controlled with the onboard thumbwheel potentiometer

Ultrasonic Sensors with 20 Foot Range (1 Transmitter and 1 Receiver), 40Hz Frequency, 2000pf Capacitance (16mm x 12mm) it is a fully functionalUltrasonic Sensors Includes 1 Transmitter and 1 Receiver Freq.: 40Hz Capacitance: 2000pf Approximate Size: 16mm diameter, 12mm height Lead spacing: 10mm Range: 20ft. Plastic housing