030908 Serial Port TTL 4-CH Relay Controler Module w/ Protective IC - Black + Blue + Green HDD & Enclosures G-sensor etc +Gesture + Gyroscope

G-sensor etc +Gesture + Gyroscope +Magnetic(geomagnetic) +Air pressure sensor +Compass +ingerprint(fingerprint) +RGB +NFC +Coulomb Counter +Wireless charging +Hardware Intercom (hardware intercom) (frequency range: 400~470MHz) Waterproof Level IPX8 Shock-proof Yes I/O Interface 3

Frequency meter display

Access control system

Resolution: 128 x 64

030908 Serial Port TTL 4-CH Relay Controler Module w/ Protective IC - Black + Blue + Green HDD & Enclosures G-sensor etc +Gesture + GyroscopeColor Others, Brand N A Model 030908 Quantity 1 Piece Material CCL + component English Manual Spec Yes Other Features With built in 3. 3~5V switching circuit; with protective IC and normally open closed contact; strong drive force with 4 CH 250V 10A; with LED indicator; supports cascade connection; with built in 3. 3V stabivolt output; with bluetooth serial port and RF serial port to choose from to control PC or cellphone wirelessly. Instructions: FF