Surefire Sonic Defender Plus EP4 Medium
EP4 Sonic Defenders Plus offer significant protection against continuous noise (such as aircraft or tank engines) when the filter caps are plugged in / unplugged. When the filter caps are open, they also protect against loud impulse noise, but allow safe noises (such as commands) through. The louder the impulse sound, the more it is insulated when the filter caps are open. Made of hypoallergenic polymer, the EP4 with the patented EarLock® retaining clip sits comfortably and securely all day.
The EP4 have the same properties as EP3, but with a wider flange and are therefore better suited for larger ear canals.
Type test according to EN352-2: 2002 / CE160902-1 / CE 160903-1 (hearing threshold test with acoustic stopper inserted in the filter.
Sound insulation tested with plugged caps according to EN 352-2: 2002:
SRV = 27 dB H = 28 dB M = 24 dB L = 24 dB.
Sound insulation tested with the caps open according to EN 352-2: 2002:
SRV = 19 dB H = 22 dB M = 16 dB L = 11 dB.
Intelligent noise insulation.
Safe protection against impulse noise.
Directional hearing is retained.
High wearing comfort.
Integrated ear ventilation with pressure compensation.
Skin-friendly and anti-allergic polymer material.
Reusable (6-8 months with daily use).
Simply clean with lukewarm water - do not use soap.
Right red / left transparent handle color coding.
Can be ideally combined with other protective equipment (helmet, glasses, respiratory protection).
Delivery including storage box and connecting strap.
Weight: approx. 2 g.
Made in USA.
Size Guide: Height of the inner auricle 23-27 mm: Medium; Height of the inner auricle from 27 mm: Large.