CONTROLLABLE GAS ALARM ON MINER'S LAMP

The utility model discloses a controllable miner lamp gas alarm, relating to an alarm and a lighting device of underground dangers. The utility model is composed of a battery jar, electrical cables, a miner lamp box in which a sensor and a control circuit board are arranged and a miner cap which is provided with an alarm lamp. The utility model is characterized in that the utility model can be externally connected with an auxiliary alarm device and an alarm output control system, and the utility model not only utilizes the advantage of strong alarm affectability of the miner lamp and can select an alarm terminal through a change-over switch, but also can receive quickly danger signals and ensure the illumination for underground activities. The utility model has the advantages of simple circuit design, reasonable structure, strong logic controllability and adjustable alarm threshold, and is suitable for the detection and alarm of combustible gases on other occasions. Besides, the utility model can be used as a monitoring device for monitor alarm, such as an earphone, an earplug, etc.