Black & Decker TLD100 XJ-sensor thermal leaks With LCD and LED 9 V (Tools & Accessories)
This is not a gimmick as I could read below. It made me win 2 in a piece by detecting a leak in a door. -How does it work? Already you should calibrate it, one is an object in the room leaks. Then once calibrated, we seek around doors, windows, or ev