Master Faac remote control, frequency 433 MHz, rolling code. It is only compatible with FAAC automations and can only replace the same remote control. Faac Gates Transmitter Coding Type: SLH L (Patent FAAC) SLH = Self Learning Hopping Code: Code varies with each use of the transmitter. An algorithm detects and validates the signal only the transmitter encoded by the receiver. Advantage: cloning is almost impossible. It is possible to replicate the encoded transmitters, even remotely from the receiver with the patented self learning (transmitter to transmitter), simply press the buttons after a certain order. Lr = Long Range - The transmitters can cover almost twice the distance through another patent of FAAC on the electronics; the Slh Long Range transmitter guides a real time ambient sensation (such as hand position, electrical interference, etc.) and automatically restores electronics by maximising radiance with each transmission. Fully compatible with the previous SLH.