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What is the difference between a residential system and a public / light commercial* system?

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The door operators in these two systems operate identically when triggered by remote control. They will open, pause for entry or exit, then close the door. The difference is in manual operation. In a residential system (using the Model 133), the door is free-swinging when manually opened. With a public/light commercial system (using the Model 233), the door acts like it has a spring door closer on it when it is manually opened. This is similar in action to what might be found in commercial restroom doors. The door resists opening slightly, and when the door is released, it closes behind you automatically.

Remote Control Batteries

The batteries used in our transmitters are shown below. They can be obtained at your local drug stores.
2-button transmitter
4-button transmitter
Replacement Battery = 12v 23A
keyless entry push pad
large wireless wall push pad commercial door opener
narrow wireless wall push pad
vertical push pad
Replacement Battery = 9v
push button door opener keychain transmitter
Replacement Batteries (2) =
3v 2016
push button door opener wireless wall touch pad
Replacement Battery =
3v CR123