Haz Alert is a small, lightweight gas and temperature alarm that detects and sounds an alarm if any of 125 toxic/combustible gases or vapors is present. The available automatic temperature sensor model sounds an alarm if excess heat build-up occurs such as in a heat stress situation. This alerts the wearer of impending danger. It may be attached to a line and lowered into manholes, storage tanks, well casings or other confined spaces. The device may be worn as a personal monitor when working in these types of environments and can be used to summon help by pressing the Emergency Call for Help button.