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3.3 Connectors & Switches
3.3.1 LED
NET: GSM network status
3.3.2 Connectors
SIM: SIM Card Holder
J3-1: EPS, Do not connect
J3-2: 3V3, Transducer excitation voltage +3.3 VDC (Continuous)
The excitation can be used to supply low power external sensors (<<1mA).
Caution:
J4-1: GND (COM), Common for digital inputs
J4-2: DI4, Digital input 4 / CNT1, Counter 1 input
J4-3: DI4, Digital input 3
J4-2: DI4, Digital input 2
J4-1: DI4, Digital input 1
3.3.3 Switches
SW1: Operation Control switch
Position CFG: Unit configuration through the USB port
Position RUN: Autonomous unit operation
BSC-50D User Guide
The excitation current affects strongly the Battery Life!
6
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