3M Peltor ProTac III

The 3M PELTOR ProTac III Headset, black, helmet attachment (MT13H221P3E) is an electronic, helmet-mounted earmuff with level-dependent function for professional use in industrial, construction, rail and logistics environments. Harmful noise is attenuated while ambient sound and warning signals remain audible up to 82 dB. The headset complies with EN 352‑3, EN 352‑4 and EN 352‑6 and provides an SNR of 31 dB (H=33 dB, M=28 dB, L=21 dB).

Level-dependent protection and connectivity
The level-dependent system reduces peak noise to a safe level and amplifies low-level ambient sound so that approaching vehicles, alarms and speech remain intelligible. The 3.5 mm listen-only stereo input (limited to 82 dB) allows connection of a two-way radio, phone or other audio source without compromising hearing protection.

Robust helmet-mounted design with long operating time
The helmet-mounted version uses stainless steel arms and ABS cups, with electronics integrated in the outer part of the cup to reduce corrosion. Wide PVC/PUR ear cushions and PUR foam inserts provide a comfortable seal. The headset operates on 2 × AA alkaline batteries, with a battery life of approx. 100 hours, automatic power-off after about 4 hours and an audible low-battery warning.

Technical specifications

• Product type: 3M PELTOR ProTac III Headset, black, helmet attachment
• Model: MT13H221P3E
• Attenuation: SNR 31 dB (H=33 dB, M=28 dB, L=21 dB)
• Function: Level-dependent ambient listening system
• External connectivity: 3.5 mm listen-only stereo input (limited to 82 dB)
• Power supply: 2 × AA alkaline batteries
• Battery life: Approx. 100 hours
• Net weight (incl. batteries): Approx. 374 g
• Materials: ABS cups, PVC/PUR ear cushions, PUR foam inserts, stainless steel arms
• Controls: On/Off/Mode, [+] and [−] buttons, voice-guided menu system
• Automatic power-off: After approx. 4 hours without operation
• Low-battery warning: Audible signal when batteries are nearly empty
• Operating temperature: −20 °C to +55 °C (battery dependent)
• Storage temperature: −20 °C to +55 °C
• Service life: 5 years excluding batteries
• Standards: EN 352‑3:2002, EN 352‑4:2001/A1:2005, EN 352‑6:2002
• Applications: Industrial workplaces, construction sites, rail work, logistics
• Included: Headset, 2 × AA batteries, user instructions
• Use limitation: Product must not be modified or altered