Intercom Systems – RTS



Single-sided super lightweight headset

  • The LH-300 headset is a super lightweight, single-sided headset for the ultimate in day-long comfort. The LH-300 features high-quality, dynamic earphones with a noise-cancelling microphone with a semi-rigid, fully adjustable boom for precise positioning on right- or left-side. The high-quality wide band dynamic earphones with soft, pliable ear cushions and headband pads offer a better fit, isolation and frequency response.

  • Models
    LH-300-DM-A4F - Single Side, Dynamic Mic, A4F
    LH-300-DM-A4M - Single Side, Dynamic Mic, A4M
    LH-300-DM-A5M - Single Side, Dynamic Mic, A5M
    LH-300-EM-i3.5 - Single Side, Electret Mic, 3.5
    LH-300-DM-PT - Single Side, Dynamic Mic
    LH-300-DM-IC6 - Single Side, Dynamic Mic, IC6


Impedance 150 ((DM-A4F, DM-A4M)
300 Ω (DM-A5M, EM-i3.5, DM-PT))
Cable Length 6 ft (1.8m)
Speaker Dynamic

Sides Single-Sided
Speaker Sensitivity 99 ((150 Ω)
100 SPL/mW (300 Ω))
Microphone Sensitivity -63 ((Dynamic)
-41 dBV/Pa (Electret))
Microphone Impedance 200 ((Dynamic)
2.2 Ω (Electret))
Microphone Type Dynamic Noise-Cancelling ((DM-A4F, DM-A4M, DM-A5M, DM-PT)
Electret Noise-Cancelling (EM-i3.5))


Name Size Date
RTS Application Guide 14.92MB Apr 17, 2019
RTS Proper Cleaning Guidelines 91KB Jun 9, 2020
Name Language Size Date
RTS full-line catalog EN 8.56MB Jan 29, 2020
Name Language Size Date
LH-300 Datasheet EN 398KB Dec 9, 2019
LH300-DM-IC6 / LH302-DM-IC6 Datasheet EN 460KB Apr 2, 2019
Name Language Size Date
LH300 LH302 Leaflet (A4) EN 2.71MB Oct 19, 2017
LH300 LH302 Leaflet (US) EN 2.72MB Oct 19, 2017




Name Size Date
Headset Cleaning Memo 84KB Jun 12, 2020
Name Language Size Date
After Sales Service Programs & Policies: North America EN 2.61MB Aug 28, 2018
Asia/Pacific Service Policies EN 2.62MB Sep 4, 2018
General Terms & Conditions of Deliver for Export Business EN 57KB Nov 26, 2014
Allgemeine Lieferbedingungen DE 184KB Nov 30, 2016
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