Radio Shoulder Speaker Mic ESM-21-TA1 - Rugged IP54 Comm Accessory

In this review the Endura ESM-21-TA1 is evaluated for professionals who need a tough, dependable shoulder speaker microphone for Harris Tait radios; the bottom line is that it is built for demanding environments and straightforward radio-first communication. The reviewer found the unit especially suited to public safety and industrial teams because of its Kevlar reinforced cabling, IP54 rating, and direct-connect reliability, which make it a practical replacement for OEM speaker mics without extra setup or adapters.

Key Features

• Kevlar reinforced cable: 4.5mm Kevlar reinforced cabling gives the mic high tensile strength and long-term durability in daily field use.
• IP54 protection: The IP54 rating offers resistance to dust and water spray so the mic keeps working in wet or dusty conditions.
• Emergency button: A dedicated emergency button provides a quick hardwired alert option for safety-focused users.
• 3.5mm accessory port: The built-in 3.5mm audio port allows connection of listen-only earpieces for discreet monitoring without losing mic function.
• Durable clip and strain reliefs: The rotating clothing clip and heavy duty strain reliefs reduce wear where the mic meets clothing and the cable meets the connector.
• One year warranty: Backed by a one year Endura manufacturer warranty for replacement coverage on defects.

Who It's For

The ESM-21-TA1 is aimed at law enforcement, security teams, railroads, schools, hotels, construction crews, and event staff who need a rugged shoulder speaker mic that connects directly to compatible Harris Tait radios. It benefits users who prioritize a strong physical build, simple plug-and-play reliability, and the ability to attach a discreet earpiece.

Those who should look elsewhere include users seeking a waterproof submersion-rated earpiece or models with integrated Bluetooth or advanced remote controls; the ESM-21-TA1 is focused on wired reliability and basic emergency signaling rather than wireless features.

Pros & Cons

Pros

• Kevlar reinforced 4.5mm cable resists daily abrasion and pull stresses.
• IP54 rating and heavy duty strain reliefs add reliability in outdoor and industrial use.
• Emergency button and 3.5mm port give practical safety and earpiece options for professional use.

Cons

• Not rated for full water immersion, so users who need submersion protection should choose a different model.

Specifications

Model	ESM-21-TA1
Compatibility	Harris Tait TP3300, TP3350, TP7110, TP8110, TP8115, TP8120, TP8135, TP8140, TP9355, TP9360, TP9435, TP9440, TP9455, TP9460
Cable	4.5mm Kevlar reinforced cabling
Ingress Protection	IP54
Accessory Port	3.5mm audio for listen-only earpieces
Special Features	Emergency button, rotating clothing clip, heavy duty strain reliefs
Warranty	1 year Endura manufacturer warranty

Our Verdict

The Endura ESM-21-TA1 is a sensible, value-oriented shoulder speaker mic for professionals who need a durable wired accessory that plugs directly into compatible Harris Tait radios. Its Kevlar cable, IP54 rating, emergency button, and 3.5mm earpiece port make it a reliable choice for law enforcement, security, and industrial teams who require straightforward dependability rather than wireless bells and whistles.

Frequently Asked Questions

Does this speaker mic work with my Harris Tait radio?
Yes, the ESM-21-TA1 is compatible with a wide range of Harris Tait models listed in the product description and replaces the T03-00045-ERAA and T03-00045-FRAA speaker mics.

Is the mic waterproof?
The mic has an IP54 rating for protection against dust and water spray but is not rated for full submersion.

Can I use an earpiece with this unit?
Yes, it includes a 3.5mm audio accessory port for listen-only earpieces so users can monitor communications discreetly.