LIND DC Power Adapters Operating Instructions Manual page 120

The Lind Ruggedized Shut Down Timer (RSDT) protects your vehicle battery from
over discharge, and protects communications and other sensitive equipment from low
voltage and high voltage damage. The RSDT is factory set to turn OFF electrical loads
a preset time after the car engine is shut down. The timer starts when the ignition is
turned OFF. The RSDT can be factory set to any desired delay from seconds to many
hours.
Specifications are listed for 12 VDC input systems
Specifications are in brackets for [24 VDC input systems]
• Low voltage shutdown at 10.5 [21] VDC
• High voltage shut down at 18 [36] VDC with auto reset.
• Loads up to 20 amps at 12 [24] VDC. Higher loads
possible with external relay.
• Automatic activation by sensing the battery voltage.
(battery not charging = timer ON).
• Optional activation by ignition switch connection.
(ignition OFF = timer ON).
• LED indicator for Timing.
Ruggedized Timer/Relay Driver
Vehicle Battery Protection Unit
Lind
Features