The PCE-WMM 50 is a well-priced device to detect carbon dioxide (CO₂). The PCE-WMM 50 prevents heath issues caused by the colourless and inodorous gas, used in the food industry, metal industry, in chemical processes and in the waste industry. The gas detector consists of two units: the detector is to be placed within locations with higher risks, while the alarm unit is placed outside that area. The gas detector features two adjustable alarm thresholds. If the measured value trespasses the pre-set threshold, an alarm is set-off (alarm lights and alarm-buzzer). The gas detector PCE-WMM 50 featured a 4-digit digital display as well as four LED lights assuring a steady visual monitoring of the gas concentration. Through the accessible, potential-free change-over contacts you can activate further alarm units, switch-on an exhauster or stop a machine. The PCE-WMM 50 can be easily mounted to a wall. It consists of a system compartment, a gas detector, an alarm unit and a cable to connect the gas detector with a remote controlling unit. Even smaller amounts of carbon dioxide might cause severe effects on the human organism. A concentration above 0.3% in the air might effect the health. If the concentration arises to 5%, it causes headaches and dizziness, while a concentration of more than 8% lead to unconsciousness and even death.