- Long-Range Mesh Intercom: Open Mesh up to 1.1 km, extendable to 4.4 km with 6 or more users.
- Hearing Protection: NRR 23 dB / SNR 30 dB for hard hat mount configuration in noisy industrial environments.
- Quick Charge: 20 minutes of charging provides up to 3 hours of Mesh Intercom use. Full charge in 2.5 hours.
- Hard Hat Compatible: Designed to attach directly to industrial safety helmets for use in construction and manufacturing.
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CAST Hard Hat Mount Earmuff with Long-Range Mesh Communication
The CAST is a professional over-the-head earmuff communication headset that combines hearing protection with long-range Mesh communication technology. Designed for industrial environments, construction sites, warehouses, and other high-noise workplaces, it enables seamless hands-free communication while helping to maintain worker safety and productivity.
Built on Sena's Mesh-only communication platform, the CAST continuously optimizes network connections and automatically reconnects users when they return within range. Open Mesh allows a large number of users to communicate over distances of up to 1.1 km (0.7 miles), while Group Mesh supports private communication sessions for up to 24 participants.
The headset also features external speakers that capture ambient sounds, helping workers remain aware of their surroundings in busy or high-traffic environments. Combined with hearing protection, long battery life, and intuitive controls, the CAST is designed for demanding workdays.
Product Features:
- Professional over-the-head earmuff communication headset
- Built on Sena Mesh-only communication technology
- Open Mesh communication with effective range up to 1.1 km (0.7 miles)
- Group Mesh supports private communication for up to 24 users
- Automatic network optimization and reconnection
- Full-duplex hands-free communication
- Integrated hearing protection for noisy workplaces
- Noise Reduction Rating (NRR) of 28 dB for earmuff version
- Ambient sound capture through external speakers
- User-friendly three-button control layout
- Up to 12 hours talk time on Mesh communication
- Removable lithium polymer battery
- USB-C charging with approximately 2.5-hour charge time
- Can also operate using 3 x AAA batteries
- Suitable for construction, manufacturing, logistics, and industrial environments
What is included:
- Headset main units (Hat adapters (type A) attached)
- Microphone
- Rubber Rings for Microphone Sponge
- Microphone Sponges
- Hard Hat Adapters (Type B)
- USB Power & Data cable (USB Type C)
- Rechargeable Battery
- Dual Battery Charger
Explore the full range of Sena communication solutions at MTN Shop.



