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Code Red Headsets Signal 21 Shoulder Speaker Mic (Connector: Midland 2-Pin)

ID: 50350 (ACC-Signal21-Mid)
Signal 21-Mid-9
Code Red Headsets Signal 21 Shoulder Speaker Mic (Connector: Midland 2-Pin)
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Code Red Headsets


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Our Noise Cancelling Signal 21 microphone has been manufactured using the highest quality specifications to be water, wind dust and impact resistant. The radio connector cord includes a strand of Kevlar to insure durability and reliability. The heavy-duty strain relief means longer service and less down time. This speaker microphone is made to withstand all types of use; public safety and firefighters. It has a sturdy swivel metal clip that can be attached in any position of your clothing or tactical vest. A covered audio jack allows conversations to be diverted directly to you ear using any of our listen only earpieces. Lightweight at only 3.6 ounces, yet provides tremendous durability and fits perfectly into the palm of your hand.


  • Sturdy reinforced construction designed for heavy use in harsh conditions
  • Sturdy metal clothing clip attaches to shirt or jacket
  • Covered audio jack compatible with Code Red Listen Only Earpieces
  • Kevlar reinforced cable guarantees reliability

Radio Compatibility:

  • Midland: 75-785, 75-440, GTX-200, GTX-250, GTX- 300, GTX-325, GTX-400. GTX-444, GTX-450, G-225, G-227, G-300
  • Maxon: SP14, SP130, SP120, SP130, SPI140, SP300, SP310, SP320, SP330, SP340, SL25, SL55, SL55+, SL100K
Color: Black
Compatibility: For use with Midland 2-Pin Radios

Manufacturer: Code Red Headsets

About Code Red Headsets

Welcome to CODE RED HEADSETS, the only source you will need for your radio communication accessories. Code Red has been providing business radio users with high quality audio solutions since 1999. We offer a wide range of 2 way radio accessories to meet any requirement. These include listen only earpieces, molded earpieces, surveillance microphones, ear microphones, speaker microphones, replacement radio batteries and battery chargers. Connectors are available for Motorola 2 way radios, Kenwood 2 way radios, Icom 2 way radios, Vertex 2 way radios and more.

5 Customer Reviews

(Write a review)

by Peter C. on 01/18/2024
"I don't normally write reviews, but I cannot help it with this PTT.

I bought it back in late 2016 or early 2017 ish. I cannot believe it has been almost 8 years. Guess what, this thing is still running very well after all this time. I never abused it or put it through things a PTT shouldn't go through though. The best part about it is that I can use its 3.5mm audio jack to hook it up to my MSA sordin supreme pro x, making a previous non-comm enabled active headset work with my radio. So if you are looking at comms for your headset, a 280 dollar sordin with a 50 buck high quality ptt will beat a sordin supreme Mil CC that is 700 plus dollars. On top of that the Mil CC does not come with any PTT so you need your own NATO downlead capable PTT that will run you at least another 100 bucks(you still need to worry whether the PTT is amped or non-amped).
I am not an expert on comm setup but I do have a Mil CC and an Ops Core AMP with a bunch of different PTTs that sometimes work and sometimes don't. In my case those two headsets do not share the same PTTs. ;(((

I think this code red headset PTT is too good to be true. I would 100% recommend because it will save you from so much pain down the road if you are looking into comm options.
by Cameron S. on 07/19/2021
"Has held up pretty well. Everybody can hear me clearly. No real complaints.
by Aaron C. on 12/11/2018
"2 years of heavy use still working great.

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