Battery Rechargeable 18650 3500mAh Li-Ion S4737AThese high performance 18650 lithium ion 3. 7V batteries offer high performance and long life from a compact package. They are 18. 6mm in diameter and 65mm long. Lithium ion rechargeables offer excellent properties for use in consumer devices, including excellent energy density and low maintenance. Lithium ion do not suffer from memory effect and possess no regular cycling that batteries often require to extend their service life. Common applications

- Transmit Power Control （Adjust Transmit Power on dBm）

The Ness 4G Dialler provides a  4G pathway for alarm diallers to communicate in the absence of a land line

3mm/F2 tab terminals

Dimensions: 330L x 173W x 220H mm (including tabs)

Operating Temperature: -20°C ~ +60°C

In addition

24V or 48V DC selectable via a three way jumper on board

Dimensions: 290W x 210H x 55D mm

Waterproof IP67 rated 2 Pin Male Chassis Mount PCB Connector

Dimensions: 85H x 66W x 45D mm

Current Rating: 5A

1 × Wireless Transmitter