133BATTERY CHARGING3 External DC power operationAn optional cigarette lighter cable CP-19R; for 12 V cigarettelighter socket) or external DC power cable (OPC-254L) can beused for external power operation.DD Operating note• Power supply range is between 10.0–16.0 V DC.NEVER CONNECT OVER 16 V DC directly into the [DC IN]jack of the transceiver.• BE SURE to use CP-19R or OPC-254L when connecting aregulated 12 V DC power supply.Use an external DC-DC converter to connect the transceiverthrough optional CP-19R or OPC-254L to a 24 V DC powersource.• The voltage of the external power supply must be within10–16 V DC when using either CP-19R or OPC-254L, oth-erwise, use the battery pack.• Up to 5 W (approx.) of maximum output power is providedwith the external DC power operation, however, when thesupplied voltage exceeds 14 V, the built-in protection circuitactivates to reduce the transmit output power to 0.5 W (ap-prox.) .• Disconnect the power cables from the transceiver when notusing it. Otherwise, the vehicle battery will become ex-hausted.• The power save function is deactivated automatically duringexternal DC power operation.• CP-19R (Optional)• OPC-254L (Optional)to cigarette lightersocket (12 V DC)to 12 V DC(power supply)White: +Black: _Transceiverto[DC IN]