1. Compact and easy to carry
2. Long-distance stable signal transmission, remote control sensitive
3. High quality materials, durable and sturdy
4. Working frequency: 868 MHz
5. Suitable for HORMANN HS1-868-BS, HS4-868-BS, HS5-868-BS, HSS4-868-BS, HSE1-868-BS, HSE2-868-BS, HSE4-868-BS, HSP4-868-BS, HSD2-868-BS
6. Button battery: cr2032