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1. Dimension: 3.1cm X 1.5cm wide 2.1cmX high 2. Main chips:. LM393, tilt sensor probe 3. Operating voltage: DC 5V 4. Inclination signal analog voltage output, 0-180 ¡ã corresponding 0.5-4.5V, can be collected as microcontroller AD; 5. Two way tilt alarm signal output; 6. Low level light will be on when valid signal output; 7. Tilt angle alarm range: 0-90 ¡ã 90-180 ¡ã Full range adjustable, adjustment accuracy of ¡À 1 ¡ã 8. Tilt signal is TTL high and low, can be accessed to the microcontroller IO port directly. 10. Applications: Smart body balance testing, experimental teaching demonstration, product development etc.; Module interface connection instruction (4-wire): 1. VCC connect to 5V voltage 2. GND connect to GND 3. DO1 left tilt TTL-level output port, directly connected microcontroller IO port for the threshold signal; 4. DO1 right slant TTL-level output port, directly connected microcontroller IO port for the threshold signal; 5. VO is a voltage signal corresponding to the angle converter, the output voltage is analog voltage value [0-180 ¡ã] corresponding to 0.5-4.5V, it can be connected with a microcontroller of the AD input port.