The Keystone Heddolf P294-1KB is a single-channel external radio receiver designed to add or restore remote-control capability to a garage door opener or automated gate operator. Installed near the operator and wired to its wall-button/trigger input, this compact receiver lets you use compatible Keystone Heddolf transmitters to command a clean, momentary relay closure just like a push button. It’s commonly used as a replacement receiver for older systems or as a universal upgrade to bridge compatibility when an opener’s built-in radio no longer matches the remotes you want to use. Typical applications include residential garage doors, community gates, commercial roll-up doors, and barrier arms that accept a standard dry-contact input.
For best results, verify the exact radio family and frequency associated with the P294-1KB variant and match it to your existing handheld remotes or the new Keystone Heddolf transmitters you plan to deploy; compatibility must align on both frequency and code type. Wiring is straightforward: provide low-voltage power from the operator or a separate transformer per the manufacturer’s instructions, land the receiver’s relay output on the opener’s wall-control terminals, then program authorized remotes following the included instructions. Observe UL 325 practices—keep remotes out of children’s reach, install the receiver in a secure location, and test the operator’s entrapment protection after setup. This Keystone Heddolf garage door and gate receiver is a practical, universal-style replacement part or upgrade when you need reliable remote control across mixed brands and legacy systems.