【Reliable Alarm Function】 The halogen leak detector makes visual and audio alarms within 0.2 seconds after detecting gas. The LCD display will show the leakage level and the alarm will increase as the gas concentration increases, thereby improving safety and ensuring effective leak detection. 【Portable Design】The Freon detector is small and easy to carry. It is very suitable for carrying to work with a protective cover. At the same time, you can choose the PPM or LEL% measurement and counting method according to your habits to meet your different needs. 【Flexible Probe】The 7.9-inch probe can easily enter small spaces such as pipes and gas fireplaces, and you can clearly see the screen in any lighting conditions. Whether indoors or outdoors, you can carry it with you to find leaks 【1800 mAh Battery】Natural gas leak detectors battery operated are designed with rechargeable lithium batteries, with a maximum standby time of up to 20 hours. Comes with a USB-C cable for easy charging, increased mobility, and long-term use without continuous power supply 【Humanized Design】The HVAC tool has 1-7 levels of brightness adjustment to cope with the problem of unclear screen display caused by different external brightness changes, which is eye-friendly. 【Detect All Refrigerants Gases】The leak detector hvac detects [CFCs: R11, R12, R13, R113, R114, R115, R500, R502, R503] [HCFCs: R22, R123, R124, R141b, R142b, R401A, R401B, R402A, R402B, R408A, R409A] [HFCs: R32, R125, R134a, R143a, R152a, R404A, R407C, R410A, R410B, R417A, R422D, R427A, R438A, R448A, R449A, R452B, R453A, R507] [HFOs: R1234yf, R1234ze(E), R1233zd(E), R1336mzz(Z), R514A, R1224yd(Z), R1243zf] [Blends: R401A, R404A, R407C, R410A, R507, AZ-50 (R507), HP62 (R404A), MP39 (R401A), NU-22 (R422D)] [PFCs: R14 (PFC-14), R116 (PFC-116), R218 (PFC-218), R3110 (PFC-3-1-10)][5%hydrogen/95% nitrogen Racer Gas] [A2, A2L, A3 refrigerants ], Weight: 0.440924524 pounds, Manufacturer: Therm La Mode