Detects all kinds of halogen refrigerants. Inner precise IC with Ultra-Low consume circuit design, more stable, battery time. sensor, high sensitivity, long use time. Flexible probe allows you to reach into awkward corners and spaces. Color: Black Two-color visual display of battery voltage. advanced detection technology enables it to recognize all (134a) refrigerants. Audio and visual alerts warn of any leakages, no matter how small. Operating Temperature: 0C to 52C (30F to 125F) Maximum Sensitivity: 6gr/yr for all halogenated refrigerants Battery Life: Approximately 50 hours for normal use Response Time: Instantaneous Work Mode: Continuous, no limitations Fixed Probe Length: 17cm/6.5in Warm-up Time: Approximately 6 seconds Reset Time: 2 to 10 seconds Powered By: 4 * AAA 1.5V batteries (not included) Package Contents: 1 x Detector 1 x Carry/storage Case 1 x Users Manual (English) Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.