Voltage Monitors

Size width 64 mm height 50 mm depth 30mm.

The Receiver Pack Tester is a hand held expanded scale voltage indicator covering the range 4.3v to 5.2v (4 cells) and 5.5v to 6.4v (5 cells) battery cell size is selected by a slide switch. Dual load rates are used 120/140mA push switch not pressed and 480/530mA when push switch is operated. Connections are via screw block connectors. This unit should only be connected to the battery directly or through the switch harness charging lead.
The unit is designed to indicate the safe, marginal and unsafe operating areas of receiver supply voltages.
Data Sheet

Size width 21 mm height 32 mm depth 15 mm Weight 10gms

The OnBoard Monitor is a light and compact Go/NoGo indicator. The main function is to indicate the on-load receiver supply voltage has fallen below safe operating limits.The switching point is set to 4.75v (4-Cell) plus or minus 50mv. Connections are via fly lead and universal plug connectors. This unit should only be connected directly to a receiver ouput and not via the charging lead.
Data Sheet

Size width 20 mm height 30 mm depth 15 mm Weight 7gms

Descriptions as for SM12 except the units are sleeved instead of boxed for very low weight.
Data Sheet

Size width 21 mm height 32 mm depth 15 mm Weight 10gms

The OnBoard Monitor is a light and compact Go/NoGo indicator. The main function is to indicate the on-load receiver supply voltage has fallen below safe operating limits.The switching point is set to or 5.95v (5-Cell) plus or minus 50mv. Connections are via fly lead and universal plug connectors. This unit should only be connected directly to a receiver ouput and not via the charging lead.
Data Sheet

Size width 20 mm height 30 mm depth 15 mm Weight 7gms

Descriptions as for SM13 except the units are sleeved instead of boxed for very low weight.
Data Sheet