ICStation Heartbeat Sensor Pulse Sensor Heart Rate Sensor Module for Arduino
http://www.icstation.com/icstation-heartbeat-sensor-pulse-se…
*Pulse Sensor is designed to view the heartbeat waveform and check your heart rate.
*And the sensor can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart-rate data into their projects.
FLA-1 Simple DIY Flashlight Kit 55x35x11.5mm
http://www.icstation.com/simple-flashlight-light-lamp-module…
XKC-Y25-NPN Non-Contact IP67 Waterproof Liquid Level Sensor
http://www.icstation.com/contact-liquid-level-sensor-ip67-wa…
*Applicable to non-metal outer wall not necessary to directly contact with liquid so that it can avoid liquid corrosion of strong acid or alkali, or the influence by scale or other impurities.