[Multiple Gases Detection]:Gas monitor of methane, LPG (propane), natural gas, gas fuel etc. [Precise Digital Display & Warning]: The detector precisely measures and displays concentration of leakage gas by an easy-to-read percentage from 0%~20% of LEL. [Easy to Install]: Easy-to-install design. Just plug to power socket will be OK. [Premium Quality]: Eco-friendly and V0 level fire-resistant ABS+PC material that complies with UL94 material flammability rate reduce the potential gas explosion risky and keep family numbers and poverty safety. Directions for use 1 Power on and off: The product can be started after it is powered on, and the USB Type-c 5VDCcan be started after it is plugged in. The product is powered off after the power is disconnected 2 Function Usage After starting up, the product displays "preheating", After the preheating is completed, it will enter the normal detection state . The gas value and carbon monoxide value are displayed as green "000", indicating the normal state. After working for 5 minutes, the product enters the screen saver state and the brightness drops to the lowest. 3 Product button function: When the product is in the alarm state, press the button to eliminate the alarm sound. When the product is in the screen saver (low brightness) state, press the button to restore the normal brightness of the display Power Supply USB type-c 5V/1A Working current WIFI version:210MA,ordinary version: 170MA Methane(naturalgas)range 0-100%LEL Carbon monoxide range 0-1000PPM Working environment -9~55 Less than 90% HR Alarm mode WIFI version: sound (buzzer) and mobile push Alarm linkage output DC5V Colour:White Material:plastic Package Contents: 1 x host Only the above package content, other products are not included. Note: Light reflection 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.