Eartec UltraLITE HD UL312-HD 3-User Single & Dual-Ear Combo Wireless Intercom System

The UL312-HD is a pre-configured UltraLITE HD kit that lets a three-person crew communicate hands-free in full duplex. It combines one lightweight single-ear Master headset with two dual-ear Remote headsets, creating a comfortable mix for directors who need situational awareness and technicians who prefer full isolation. All electronics—including the battery—are housed in each ear-cup, so there are no belt-packs or dangling wires to snag on gear.

Operating on interference-free DECT 6.0 (1.9 GHz), the system delivers clear voice quality with up to 400 m (1,312 ft) line-of-sight range. Each headset ships with a hot-swappable 800 mAh Li-Po battery that provides roughly six hours of talk time. A 270° noise-canceling boom auto-mutes when raised, and the reversible design lets users wear the microphone on the left or right side in seconds.

The included multi-port charger tops up all three batteries simultaneously in about three hours, while the padded soft case keeps the entire system organized and protected between shoots, boat races, worship services or construction tasks.

Key Features

• 3-User Combo: 1 single-ear Master + 2 dual-ear Remotes for flexible monitoring preferences.
• Full-duplex DECT 6.0: 1920–1930 MHz digital transmission avoids Wi-Fi/Bluetooth congestion.
• All-in-one headsets: No belt-packs—transceiver and battery are built into each ear-cup.
• Rugged comfort: Deluxe padding and silicone seals; each headset weighs ≈ 4 oz.
• Long-range wireless: ≈ 400 m / 1,312 ft line-of-sight coverage between users.
• Hot-swappable power: 3.7 V, 800 mAh Li-Po batteries—≈ 6 h talk, ≈ 3 h recharge.
• Auto-mute boom: 270° rotating, noise-canceling mic mutes when raised.
• Expandable: Add up to four Remotes per Master, or eight when paired with an optional HUB base.

Technical Specifications

• Standard: DECT 6.0, TDMA access
• Frequency (USA): 1920–1930 MHz
• Range: ≈ 400 m / 1,312 ft line-of-sight
• Speech Encoding: ADPCM 32 kbit/s
• Transmit Power: 100 mW (max)
• Battery: 3 × 3.7 V / 800 mAh Li-Po, hot-swappable
• Talk Time: ≈ 6 h per battery
• Recharge Time: ≈ 3 h
• Operating Temp: 0 – 40 °C
• Headset Weight: ≈ 4 oz (0.11 kg) each

What's Included

• 1 × UltraLITE HD Single-Ear Master Headset
• 2 × UltraLITE HD Dual-Ear Remote Headsets
• 3 × Rechargeable 800 mAh Li-Po Batteries (one per headset)
• 1 × 3-Port/Multiple-Bay Charger with AC Adapter
• 1 × Soft-Side Zippered Carry Case

*Exact box contents and charger style may vary by distributor.