


Your Sentry 300 automatic gate openers control board was designed with a current sense safety feature and we strongly recommend other safety devices such as photo eyes to make each installation as safe as possible and reduce the risk of personal injury and/or property damage.
AUTOMATIC GATE OPENER BATTERY INSTALL
Failure to install the 12V battery will prevent the system from working correctly. The FM150 is the replacement battery for the following Mighty Mule gate openers: FM500/502, FM700/702, MM-SL1000B, and MM-SL2000B. In doing so, along with performing the installation in step-by-step order, you will achieve optimal results. Yes, all Ghost Controls gate openersrequire a 12V battery to be installed for the system to operate. PLEASE READ THE ENTIRE MANUAL CAREFULLY PRIOR TO INSTALLATION. USAutomatic appreciates the fact you have recognized the quality of the Sentry gate opener for your installation and would appreciate your comments on how we are doing so that we may continue to build and design products in the future that work the way you want them to. Attention to detail and quality parts makes the Sentry Automatic Gate Opener the First High Quality Gate Opener for the Do It Yourself Installer. The AC power that is run to a 12 volt or 24 volt operator is present to help keep the battery or batteries charged. Single Swing Gate Operator Battery Powered with Remote Control Kit Gate Motor Solar Compatible.

Many other features have been designed into the control board to ensure superior operation for years to come. Ghost Controls Heavy Duty Single Solar Automatic Gate Opener Wireless Access Bundle.
