Extech’s new RD300 detects all existing refrigerants used in various air-conditioning, cooling, and refrigeration systems. Designed to increase reliability in the field, the replaceable sensor tip has a built-in LED light with on/off switch to provide illumination in dimly lit areas. High/medium/low sensitivity modes enhance accuracy, audible alerts (with mute button) and visual alarms reduce missed detections, and the low battery indicator enhances reliability on jobsites, according to company officials.
Leak detector: Extech
![extech-121013-feature.jpg](http://www.esmagazine.com/ext/resources/ES/Prod_Art/2013/12/extech-121013-feature.jpg?1386733001)