1. Portable detector for detecting all combustible gas.2. Long flexible stainless probe reaches all areas.3. Audible semiconductor probe and auto fast warm-up.4. Instant response, pinpoint leak position and low battery indication.5. Audio & visible leakage alarm indication and adjustable sensitivity. Compact size, light weight, easy to carry and operate.Sensor: Gas-sensitive semi-conductorReaction range: 50~1000PPM (methane)Reactions Sensitivity: Approx.500PPM: Approx. 2secAlarm mode: Visible and audibleOperating conditions: O to 50C / 20 to 80%RHStorage conditions: -10 to 60C / 20...80% RHBatteries:2x1.5V AAA battery(not include)DIY Supplies:ELECTRICALModel Number:HT66Gas Type:Combustible GasWith LCD Screen Or Not:Yescolor:BlackMaterial:ABSsize: 317 x 41 x 26mmPackage Contents:1 x Combustible Gas DetectorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.