Two devices.
One speaker microphone.
Control at your fingertips.
Bluetooth Speaker Microphone with Dual PTT and Dual Audio. Connect your smartphone and a compatible PoC radio, listen to both audio sources and choose which device to transmit to.
The Dellking H4 brings your everyday professional communication together, with wireless connectivity, DSP audio processing and wireless charging support in the version available from GPScom.
Your smartphone and your team, connected to your workflow
When your job involves communicating through more than one device, every extra action matters. The Dellking H4 combines two simultaneous Bluetooth audio connections with Push-To-Talk control for two compatible links.
Keep your smartphone and a compatible radio connected while listening and controlling transmission from the speaker microphone. A practical solution for professionals who need team coordination, quick responses and less switching between devices.
Choose which connection to transmit to
Dual Link Push-To-Talk provides transmission control for two compatible connections, depending on the devices, application and system configuration.
Two audio sources, combined listening
The H4 supports audio connections to two Bluetooth devices at the same time, such as a smartphone and a compatible radio. The merged listening function brings both audio sources to the same speaker microphone.
Separate transmission to each device
Listen to both connections and speak to the one you select. Dual Talk / Merged Listen keeps conversations separate between the two connected devices, without bridging them into a shared conversation.
Hear both sides. Speak where you need to.
This is the H4's key advantage: combined listening, separate transmission and PTT control for two connections. This function keeps conversations separate between the connected devices; it does not imply encrypted communication.
DSP audio processing
In noisy environments, clear voice communication is essential for effective coordination. The Dellking H4 features DSP digital audio processing with noise cancellation, designed to reduce the effect of unwanted background sounds.
Its anti-howling function helps reduce acoustic feedback — the characteristic whistling sound that can occur during communication.
Wireless charging for everyday convenience
The version available from GPScom supports wireless charging, providing a convenient option for daily recharging with a suitable compatible charger.
Wireless charging is offered by the manufacturer as an optional feature. Contact GPScom for details about compatible charging bases and package contents.
Built for professionals who need to stay coordinated
Transport & Logistics
For drivers and delivery teams using a smartphone alongside a compatible PoC communication system in their daily work.
Security & Facility Management
For teams that need contact with their control centre while maintaining an audio connection to a second device.
Hotels, Warehouses & Technical Teams
For shift supervisors, technicians and staff coordinating tasks through compatible applications and radios.
Features that make a difference
| Feature | Function |
|---|---|
| Manufacturer / Model | DELLKING H4 |
| Device type | Bluetooth Speaker Microphone / wireless speaker mic |
| Dual Link PTT | Push-To-Talk control for two compatible connections |
| Dual Audio | Simultaneous audio connections to two Bluetooth devices |
| Dual Talk / Merged Listen | Combined listening to both audio sources and separate transmission to the selected connection |
| DSP Noise Cancellation | Digital audio processing to reduce unwanted noise |
| Anti-Howling | Acoustic feedback reduction |
| PoC applications | PTT support for many PoC applications, subject to compatibility with the specific app and device |
| Wireless charging | Supported by the GPScom version with a suitable compatible charger |
Feature overview
Frequently asked questions
Can I connect my smartphone and my PoC radio?
Yes, this is one of the H4's main applications, provided both devices support the required Bluetooth connections and control functions. Audio compatibility and PTT compatibility must be checked for your specific model.
Does it work with every Bluetooth radio or application?
Bluetooth connectivity alone does not guarantee full PTT functionality. Compatibility with the device, application and control protocol is required. Some radios may need a suitable Bluetooth adapter.
Can the two devices hear each other's conversations?
Dual Talk / Merged Listen allows the user to listen to both sources while keeping transmission to each connected device separate. It does not operate as an automatic audio bridge or repeater between the two connections.
How can I check compatibility with my equipment?
Send GPScom your smartphone or radio model, operating system and the name of your PoC application. We can then check the appropriate configuration before you purchase.
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