EARMOR M51 PTT Module – Motorola 1-pin

EARMOR M51 PTT Military Module

The M51 PTT module is the core of every functional tactical headset and radio setup. Simply connect it between your radio and an EARMOR headset with a Nexus TP-120 connector to control communication with a single button. The large PTT button offers a positive tactile feel and is easy to operate even while wearing gloves, making it ideal during movement or stressful situations. The housing is made from durable polymer, providing excellent strength while keeping weight to a minimum. A removable metal clip on the back allows secure attachment to MOLLE webbing, a belt or shoulder strap, ensuring the PTT is always within reach. A practical feature is the 3.5 mm side port for connecting an external button such as the EARMOR M50 finger PTT switch. The M51 is designed primarily for EARMOR headsets. It may work with other TP-120 compatible headsets, but compatibility cannot be guaranteed. It is not compatible with Z-Tactical, TAC-SKY or Element products.

Key Features

Motorola 1-pin connector

Compatible with two-way radios such as Cobra, Spirit GT and others.

Nexus TP-120 headset connector

NATO 7.0 / MIL-STD 4-pin standard for EARMOR headsets.

Large PTT button

Easy to locate and operate, even while wearing gloves.

Durable housing

Rugged polymer construction built for demanding conditions.

Removable metal clip

Secure attachment to your plate carrier or tactical gear.

3.5 mm port for M50 finger switch

Connect an external PTT switch for even faster operation.

EARMOR M51 PTT

Reliable connection between your EARMOR headset and compatible radios.

Technical Specifications

• Model: M51
• Radio connector: Motorola 1-pin
• Headset connector: Nexus TP-120 (NATO 7.0 / MIL-STD 4-pin)
• Material: Polymer

Package Includes

• EARMOR M51 PTT switch (Motorola 1-pin)
• Removable metal clip

Frequently Asked Questions (FAQ)

Will it work with headsets from other brands?

If they use a genuine Nexus TP-120 (NATO standard) connector, there's a good chance they will. However, cheaper brands such as Z-Tactical or Element often use different wiring, so compatibility cannot be guaranteed.

What is the 3.5 mm side port for?

It is used for an external PTT button, such as a finger-mounted switch or a rifle-mounted button. It's perfect when you need instant communication without reaching for your vest while aiming.

Where should I mount the PTT on my gear?

Ideally on your shoulder strap, where you can press it without looking. A common mistake is mounting it too low or too far to the side. Place it on the opposite side of your shooting shoulder—for example, if you shoulder your rifle on the right, mount the PTT on the left.