The transmitter and receiver — a two-part radio system
Press the button and the transmitter broadcasts a short radio burst carrying its identity code; the receiver compares it against its stored list and, on a match, closes the relay that starts the motor. Range depends on the transmitter’s power, the receiver’s antenna and the walls between them — which is why a failing battery shows up first as shrinking range, not sudden death.
Fixed code vs rolling code — the security divide
Fixed code (older systems): the same signal every press — easy to clone at a kiosk, and equally easy for a thief’s grabber to record and replay. Rolling code (every modern system): the signal changes on each press following a synchronised algorithm — cloning and replay both fail, which is why modern remotes must be paired at the receiver, never copied. Upgrading an old fixed-code gate is as simple as wiring an external rolling-code receiver onto the same motor.
What this means when you buy
Compatibility is receiver-side: the new remote must speak your receiver’s protocol and frequency, which a photo of the board settles instantly. That is the whole buying rule — send the photo on WhatsApp 01098470908, get the confirmed match with the updated price, and pair it with the learn button in under a minute. For brand-specific guidance see the ACM and Key guides linked below.
Related guides
FAQ
What frequency do gate remotes use in Egypt?
Mostly 433 MHz, with some systems on 868 MHz — the receiver decides, and its photo tells us instantly.
Why does my neighbour’s remote never open my gate?
Each transmitter carries a unique identity code; the receiver only fires for codes it has learned — that is the whole security model.
Is rolling code really uncloneable?
Practically yes — the signal changes every press following a synced algorithm, so recordings and kiosk copies are useless.
Can I secure my old fixed-code gate?
Yes — an external rolling-code receiver wires onto the same motor, and from then on only paired modern remotes work.
Lost my only remote — what now?
A compatible remote pairs directly at the receiver’s learn button; no old remote needed. Send the board photo and we match it.
