<p> </p> <p>Natural &amp; combustible gas leak detector – pen type with audio &amp; visual alarm.</p> <p>The HT61 gas leak detector can detect all types of combustible gasses like methane, propane, natural gas, etc.</p> <p>As the concentration goes up, the audible alarm beeps more frequently &amp; the scale goes up.</p> <p>Check appliances &amp; piping in your house to pinpoint the precise source of a potential gas leak with this practical mini gas detector.</p> <p>Features:</p> Detects the presence of all kinds of combustible gas Sends out an audible and visual alarm if any gas is detected High and low sensitivity – switchable for different scenarios LCD display with green backlight ensures clear visibility even in dim light Without complicated instructions, extremely simple to use. Auto power off after about 10 minutes if there is no operation or measurement signal. Powered by 2 x 1.5V AAA batteries (not supplied) <p>Parameters:<br><br></p> Sensor: Gas-sensitive semi-conductor Reaction Range: &gt;50PPM (methane) Warm-Up Time: Approx. 30 sec Reactions Time: Approx. 5 sec (&lt;=500ppm), approx.=”” 2=”” sec=”” (=””&gt;500PPM) Alarm Mode: Visual &amp; audible Operating Conditions: 0℃~50℃ / 20~80%RH Storage Conditions: -10℃~60℃ / 20~80%RH <p> </p>