Only compatible with 868.3 MHz blue buttons: This replacement remote control only works with Hörmann handheld transmitters operating at 868.3 MHz and with blue buttons. Not compatible with models with gray, green, or yellow buttons, or with other frequencies.✅ Wide compatibility with Hörmann models: compatible with: HSM4-868, HSE2-868, HS4-868, HSE4-868, HS1-868, HS2-868, HSM2-868, HSZ1-868, HSZ2-868, HSP4-868, HSP4-C 868, H3, SD2-A 868, HSD2-C 868. Also suitable for garage door openers such as SupraMatic E/P, ProMatic, RollMatic, RotaMatic, LineaMatic, etc.✅Two easy programming methods: you can program the handheld transmitter either by copying the original remote control transmitter or directly via the receiver of your garage door opener. Perfect even if the original is no longer available.✅ 4 programmable buttons and 30m range: control up to four doors or devices simultaneously – comfortably from the car or driveway with a range of up to 30 meters.✅ Compact and practical design: thanks to its slim size, the handheld transmitter easily fits into any bag or glove compartment. Robust casing, easy to carry – ideal for daily use.