Formaldehyde detection module datasheet Feature • Zero calibration, high consistency. • High sensitive and resolution • Drifting auto compensation and temperature compensation • Low power consumption • Long life time • I2C communication • High stability and linearity Application • Vehicle-mounted and indoor air cleaner • Kitchen and building ventilate system • Portable gas detection

Pinout (URAT)

Output method Module use 2 wire I2C bus, the default is Slave Addr=0x3B, this is only read/write address, which occupied bit7 to bit1. When read from sensor, write 0x3B<<1|0x01=77. I2C data format Module pictures: Note: R2 is load resistor, it may differ from different production batch number. Common value are: 10K, 27K, 47K, 100K and 200K. The value difference will not affect the module electro performance and sensor performance.

Outline dimension User control board IMPORTANT PRECAUTIONS • • • • • Please provide preheating for more than 5-10 min in first time use. Avoid vibration and drop, and forbid liquid into sensor inside. Do not apply this module to systems involving personal safety Do not place the module in a high concentration of organic gas for a long time Do not set module in application which has strong g