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BLE I/O Expander

The WBC300 is a BLE I/O expander which has digital input/output and analog input. It is used for engine control and locking control together with external relay. It also can be used for door open/close detection, and fuel gauge reading. It works with Queclink BLE trackers for stolen vehicle recovery and remote control.



  • Specification

49.9 × 36 × 14mm

1.96”(L) × 1.42”(W) × 1.55” (H)

Weight18.3g (0.65oz)
Operating Voltage8V ~ 32V DC
Operating Temperature-20℃ ~ +60℃
Carrier Frequency2.4 GHz RF transceiver compatible with BLE 4.2 and 5.0
Transmission DistanceMax 80m (open area)
RF Power2dBm by Default, -20dBm Min, 5dBm Max
Digital Input1 negative trigger input for normal use
Digital Outputs2 open drain outputs 150 mA max drive current
Analog Input1 analog input
LED IndicatorIndicates device activation, pairing or current status