MH-37A4B-1 Single Wire Surveillance Kit w/ inline PTT
MH-37A4B-1 Single-Wire Surveillance Kit: discreet listening with inline PTT for Vertex radios Single-pin connector · Comfort loop-style earpiece · Inline PTT microphone · Fits right or left ear · S...
MH-37A4B-1 Single-Wire Surveillance Kit: discreet listening with inline PTT for Vertex radios
Single-pin connector · Comfort loop-style earpiece · Inline PTT microphone · Fits right or left ear · Single-wire design · Accessory
The MH-37A4B-1 is a single-wire surveillance kit that pairs a comfort loop-style earpiece with an inline push-to-talk (PTT) microphone, built for two-way radios that use a single-pin connector. The loop earpiece fits either ear for discreet, all-shift listening, while the inline PTT keeps transmit control on the mic for one-handed operation.
Who it's for
Built for security, retail, hospitality and event teams that need low-profile audio on single-pin Vertex radios. If your model is not on the compatibility list, contact us to confirm the connector before ordering.
Key features
- Comfort loop-style earpiece: fits the right or left ear for any user and all-shift comfort.
- Inline PTT microphone: key up transmit directly from the mic for one-handed operation.
- Single-wire design: simple, low-profile build for discreet communication.
- Single-pin connector: matches single-pin Vertex two-way radios.
- Broad Vertex compatibility: listed for a wide range of VX and EVX models.
Specifications
| Spec | Detail |
|---|---|
| Model | MH-37A4B-1 |
| Style | Comfort loop-style surveillance earpiece |
| Microphone | Inline PTT |
| Connector | Single-pin (single-wire) |
| Ear fit | Right or left ear |
| Type | Accessory |
| Listed compatibility | VX-210A, VX-160, VX-180, VX-230, VX-260 Series, VX-350, VX-410, VX-420, VX-450 Series, EVX-261, EVX-534 |
Frequently Asked Questions
What radios does the MH-37A4B-1 work with?
It is listed to work with single-pin Vertex models, including the VX-210A, VX-160, VX-180, VX-230, VX-260 Series, VX-350, VX-410, VX-420 and VX-450 Series, plus the EVX-261 and EVX-534. If your model is not listed, contact us to confirm the connector first.
Does the MH-37A4B-1 have a push-to-talk button?
Yes. The kit includes a microphone with an inline PTT, so you can key up transmit directly from the mic without reaching for the radio.
Does the earpiece fit the right or left ear?
Either. The comfort loop-style earpiece is designed to fit the right or left ear, so it works for any user and either side.
What kind of connector does the MH-37A4B-1 use?
It is a single-wire kit with a single-pin connector. If you are unsure whether your radio uses a single-pin jack, contact us and we will confirm before you order.
What is the MH-37A4B-1 used for?
It is a surveillance-style earpiece kit for discreet two-way radio communication, commonly used in security, retail, hospitality and event settings where the audio needs to stay low-profile.
Detailed specifications are coming soon. In the meantime, here's the basics:
| Brand | 2Way Radio Solutions |
| Product Type | Accessories |
| SKU | — |
Full spec sheet: contact us at 1-800-507-6002
Shipping
- Free shipping over $125 · on qualifying U.S. orders
- Calculated at checkout · many items ship at weight-based rates
- Delivery estimate at checkout · based on item availability & method
- Ships across the U.S. · some products have shipping restrictions
Returns & warranty
- 15-day returns · most new, unopened items for a full refund
- Return shipping covered · if the item arrived incorrect or defective
- Refunds · typically within ~2 weeks of us receiving your return
- Manufacturer warranty · per the manufacturer’s terms
No FAQs yet for this product. View general FAQs →
