K7DCO carbon monoxide sensor equipped with a Kidde electrochemical sensor, guaranteeing 10 years of operation. Battery power supply allows the detector to be mounted in an optimal place in the room and provides protection also in the event of a power failure in the network. The built-in LCD display shows the concentration level of carbon monoxide in the range from 0 to 999 PPM. CO concentration measurements are performed every second. Exceeding the permissible CO level is signaled optically (red LED) and acoustically (loud, pulsating sound alarm with a strength of 85dB). The device's memory stores information about the detection of CO concentration exceeding the level of 100 PPM. Thanks to this, the user can make sure that there is no emission of carbon monoxide during his absence in the room. The sensor has a test / reset button that allows you to check the device's operation and reset the alarm signal, as well as a button when pressed, which displays the highest detected CO level stored in the sensor's memory. The sensor also has the function of informing about the activation of the alarm in the last 14 days. Thanks to this, the user can make sure that there is no emission of carbon monoxide during his absence in the room. The efficiency control system monitors on an ongoing basis, among others: the sensor, internal circuits and the state of the battery. In the event of a malfunction or low battery level, the yellow LED blinks, the LCD panel displays the appropriate graphic information and an audible signal sounds. In addition, the sensor is equipped with a simulation test function that allows you to quickly check the correct response of the sensor to the CO test gas. Thanks to the special shock-resistant design, the detector has been approved for use not only in houses and apartments, but also in caravans, motorhomes and boats. After 10 years from the activation of the power supply, the sensor will remind you to replace the device. K7DCO is marked with the B building mark confirming compliance with the Polish standard PN-EN 50291-1: 2018 + AC 2021 for home carbon monoxide detectors. The research was carried out by the Scientific and Research Center for Fire Protection, National Research Institute. Józef Tuliszkowski (CNBOP-PIB) and has a BSI certificate confirming compliance with the requirements of BS EN 50291-1: 2018 issued by the British Standards Institution (BSI). Additionally, the K7DCO sensor is certified to meet the requirements of BS EN 50291-2: 2019 (PN-EN 50291-2: 2020) and allows the device to be used in camping vehicles and boats. Compliance with the above-mentioned standard has been confirmed by the independent research unit of the British Standards Institution.