The Hollyland Solidcom M1 Pro-4B-DE is a full-duplex wireless intercom system built around the RU51 base station, supplied with four BP51 beltpacks and four headsets. Dual-microphone electronic noise cancelling keeps speech intelligible in loud production environments, with a 400m (1,300ft) line-of-sight range and support for up to three talk groups. It suits theatres, touring productions, broadcast crews and event teams coordinating multiple departments from a single system.
400m
LOS range
4
Beltpacks
3
Talk groups
1.9 GHz
DECT band
UK licensingSolidcom systems operate in the 1.9 GHz DECT band, which is licence-exempt in the UK. No Ofcom licence or frequency coordination is required.
Features
Dual-microphone electronic noise cancelling
400m (1,300ft) communication range
Enhanced audio quality
Grouping talk across up to three talk groups
App and web page configuration
1.9 GHz operating frequency
Comfortable-fit headsets
Heavy-duty utility case with foam inserts, pressure relief valves, waterproof O-ring seal, safety lock latches and ID slot
Specifications
| Operating frequency | 1.9 GHz (DECT) |
| Communication range | 400m (1,300ft) line of sight |
| Talk groups | Up to 3 |
| Configuration | App and web page |
| Beltpacks | 4 × BP51 wireless intercom beltpacks with 8 × BP51 batteries and charging base |
| In the box | 1 × RU51 intercom system, 4 × headsets, 4 × BP51 beltpacks, beltpack battery charging base, 2 × external fibreglass antennas, 8 × BP51 beltpack batteries, 4-pin XLR power adaptor, 4 × lanyards, PoE adaptor, 3/8″ mounting screw, RU51 crab clamp, RJ45 to dual XLR cable, RJ45 to XLR cable, hard shell ABS case, 2 × 13A-IEC cables, USB-A to USB-C cable, heavy-duty utility case, user manual, warranty card |
| Warranty | 1 year |





