Protocontrol Instruments India Pvt. Ltd manufactures and exports Ultrasonic Proximity Sensor Switch. Protocontrol Instruments India Pvt. Ltd is an ISO 9001:2000 certified company. The Ultrasonic Proximity Sensor Switch serves as a basic block of automation. They find application for position, speed, direction, and revolution and liner speed measurement. This Ultrasonic Proximity Sensor Switch is designed for special machine manufacturer. It provides analogue output depending on level or distance.