Zhangjiagang City, Jiangsu Province, China.
+86-512-58810663
If you’re concerned about your baby sleeping safely, you may want a baby movement monitor, which comes with a mat or other sensor to detect your baby’s movement and heartbeat.The heartbeat sensor circuit diagram comprises a light detector and a bright red LED. The LED needs to be of super-bright intensity because maximum light passes and spreads if a finger placed on the LED is detected by the detector.