push.tt / Hardware

Controls for work in motion

Audio is usually the easy part. The button event is what must keep working with the screen off, the app in the background, and the exact handset firmware in your fleet.

Filter accessories8 options
Connection
Function
Readiness
Hardware guide

Accessories to evaluate

6 profiles

Any maker Validation required

Wired speaker microphone

A shoulder microphone for loud audio and a familiar thumb-operated talk control.

  • Android wired media-button handling is implemented
  • The exact handset pairing is not blanket-certified
  • Bind and test press, hold, and release before purchase
See the validation note
Any maker Validation required

Bone-conduction headset

Open-ear audio for crews that need awareness of the environment around them.

  • Treat audio and the PTT button as separate tests
  • Confirm microphone routing with the screen locked
  • Hearing protection requirements remain site-specific
Validate your headset
Any maker Validation required

Bluetooth PTT button

A compact remote talk control for a belt, steering wheel, counter, or lanyard.

  • The Android media-session path is implemented
  • Pairing and background routing vary by firmware
  • Press, hold, release, and reconnect all need a physical test
Read the button notes
Standards-based component Commissioning required

CTIA / USB-C bridge adapter

Two-way phone audio for a VOX radio bridge, with a real microphone input.

  • Many USB-C audio adapters are output-only
  • The cable carries audio, not radio PTT or COS
  • Use isolation and independent level control
Review the Phone Bridge path
Field-engineered component Commissioning required

Isolated radio audio interface

Transformer-isolated, level-controlled audio between the radio and gateway host.

  • Attenuation and DC blocking are functional requirements
  • A raw passive cable can distort or damage hardware
  • Both directions must be levelled on the actual radio
Understand the physical interface
Field-engineered component Commissioning required

Hard PTT and COS interface

Fail-safe transmit keying and carrier detection for an unattended donor-radio gateway.

  • PTT must bias to unkeyed if software or power fails
  • COS is preferred to guessing activity from audio
  • Polarity, release, and time-out protection need live proof
See gateway safety requirements
Before a fleet order

Bring us the exact model

We will check the Android release, control path, audio route, and commissioning boundary with you.

Talk through the hardware