The disposable PDM is a full-featured single-gas detector that offers you unequalled value. The PDM single gas detector is your daily monitor for hazardous environments, because of its high reliability and user-friendliness. The PDM is the most cost-effective way to ensure safety. It operates for up to two years, just turn on the device and it runs continuously — no need for battery charging and replacements of sensors and batteries. That means great reliability and no downtime.