Gas Detector Module

Introduction:M405 adopts electrochemical gas sensor with high accuracy and good stability, external output of which have basic output of household gas alarm: output signal of electronic lamp, fault lamp, alarm lamp, buzzer, etc. This module is designed according to UL2034, and can be used for complete household carbon monoxide alarm development of household gas alarm. Application:Household carbon monoxide alarm Specification Target Gas:CODetection Range:0-1000ppmType of sensor:Electrochemical sensorWorking Voltage: 5-12VWorking Current:< 2uASensitivity:0-150ppm±5ppm 150-400±10ppm Warm-up time:30SLife Expectancy:>2 yearsStandard Working Condition:Temperature:0 55Humidity:20% 90%RHStorage Condition:Temperature:-10 55Humidity:20% 90%RHDimension:31×24×24mmL×W×HWeight:About 20 gramsPin description Pin Nos.Functional group Functional description Electronic powerpin1pin6VCC GND Voltage range:5V-12V,recommending 9V Without reverse connection protection Output Pin2- Pin5 Pin7Sensor fault monitoringControlling of sensor fault detecting Pin8ButtonTesting button input pin Low level triggering Pin9BuzzerPin of Alarm buzzer control output COMS unprotected output When VCC=3V, the minimum of high level is 2.2V (10mA Source Current), and the maximum of low level is 0.7V (10mA Sink Current). Pin10Alarm lampPin of alarm lamp output COMS unprotected output When VCC=3V, the minimum of high level is 2.2V (10mA Source Current), and the maximum of low level is 0.7V (10mA Sink Current). Pin11Alarm lampPin of alarm lamp output COMS unprotected output When VCC=3V, the minimum of high level is 2.2V (10mA Source Current), and the maximum of low level is 0.7V (10mA Sink Current). Pin12Fault lampPin of fault lamp output COMS unprotected output When VCC=3V, the minimum of high level is 2.2V (10mA Source Current), and the maximum of low level is 0.7V (10mA Sink Current). Pin13Voltage detecting portPort of battery voltage detecting input Alter the divider resistance R3, R4 according to personal requirement Pin14Voltage detecting controlBattery voltage detecting control output-portInstallation instruction This module connects with external part by PH2.5 configuration of single-row inserting pin. When using it, you just need insert the module into pre-set circuit. If the joint strength of the module needs to be enhanced, you can weld the module on the circuit board directly. Maintenance 1. In order to make the air composition keep consistent between the inside and outside of module, please keeping heat output hole and gaseous diffusion hole of module clean. 2. In order to ensure the accuracy of alarm point, please adopting standard gas recommended by coal industrial department to calibrate the module after using one week. 3. If need cleaning, please wipe the surface of module with brush gently after power off. Do not use acidic or alkaline detergent to clean module. 4. If sprinkle water on the module, please cut off the power immediately, and send to the place appointed by dealer. Do not use the module again until it is ensured by professionals all the functions are working well. Diagram of application principle