Abstract: Devices and methods for the detection of conditions indicative of production and/or use of methamphetamine hydrochloride are disclosed. The device comprises a self-contained power source, and an airborne sensor configured to output a signal indicative of the presence of methamphetamine hydrochloride. At least one processor is configured to maintain the device in a low power sleep mode until a predetermined time condition is met. On the time condition being met, the airborne sensor is preheated for a first period of time and the signal output by the airborne sensor is monitored. On determining that the signal output by the airborne sensor meets a predetermined threshold the airborne sensor is preheated for a second period of time, wherein the second period of time is longer than the first period of time, on determining that the signal output by the airborne sensor meets the predetermined threshold following the preheating for the second period of time, an alert is transmitted to a remote location.