Hollyland Solidcom M1 Full Duplex Wireless Intercom System

The Hollyland Solidcom M1‑4B is a professional full‑duplex wireless intercom system designed for real‑time, two‑way communication across a team of up to four users. It operates on the 1.9 GHz band with auto-frequency-hopping to avoid interference, delivering up to ~400 m (1,300 ft) LOS range via a built-in base-station panel antenna, or 360° coverage with added external FRP antennas. The system supports three simultaneous talk groups, making it ideal to segment teams (e.g., camera, lighting, production). Each beltpack features a 16 kHz audio sampling rate, noise-cancellation algorithms, and a frequency response from 200 Hz–7 kHz for clear broadcast‑quality voice. The base station can cascade with other M1 units or integrate with 2-/4-wire wired intercom systems, and is powered via PoE or NP‑F batteries. Beltpacks have removable lithium-ion batteries with around 6 hours of operation per pack, and you can configure the system via a mobile app or a web interface. Features like sidetone, intuitive grouping, and a rugged charging base make it reliable and user‑friendly for events, productions, or broadcasts.