Initial power up of Discovery 2G Plus RS232

How to insert Micro-SIM card

1. Remove the cover: Gently push the top and bottom cases of the Discovery 2G apart with both hands to open the device.

2. Insert Micro-SIM: Place the Micro-SIM card into the SIM holder, ensuring the cut-off corner faces away from the slot.

3. Reattach the cover: Securely attach the device cover back into place.

4. Your device is now ready for connection.

Figure 1	Figure 2
Figure 3	Figure 4

For optimal performance and to prevent damage, always ensure the device is fully powered off—with both external power and the internal battery disconnected—before inserting or removing the Micro-SIM card. Failure to do so could result in a damaged Micro-SIM card or the device failing to detect it.
Internal Battery Disconnection Procedure To disconnect the internal battery, remove the device enclosure carefully and separate the PCB from the casing. The internal battery is connected to the PCB using a 2-pin connector. Gently unplug the connector from the port. After inserting or replacing the SIM card, reconnect the 2-pin connector securely before reassembling the enclosure.

2x6 socket pinout

Pin No. Cable Color Feature 1 Red 9 to 90V 2 Green Ignition-Non EV 3 Blue Analog In(AN) / Digital In(DI)- 2 4 White Digiital Out (DO)- 1 5 Violet 1-Wire Power 6 Grey RS232(Tx) 7 Black Ground 8 Yellow Analog In(AN) / Digital In(DI)- 1 9 Orange Digital Out(DO) - 2 10 Pink Ignition-EV 11 Sky Blue 1-Wire Sensor Data 12 Brown RS232(Rx)