The Compass refrigerant leak detector has a patented heated diode sensor, especially designed for residential and commercial leak-detection uses. The product can pinpoint the leak source quickly through the high/low sensitivity adjustment. LEDs illuminate to convey leak size. A water-resistant filter protects this sensor from jobsite contaminants, such as dust, dirt and oil. For maximum productivity and flexibility on service calls, Compass is powered by rechargeable NiMH batteries and features a low-battery indicator. It also comes with an AC adapter.

Inficon, 2 Technology Place, East Syracuse, NY 13057-9714, (315) 434-1100; www.inficon.com.