HP Poly 85T27AA#ABA Poly CS540 Top Only Wireless DECT 6.0 Headset - Mono - Earbud/On-ear - Boom Mic - In-ear
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Product Features
Technical Overview
The CS540 headset operates on the DECT 6.0 wireless standard, which uses the 1.9 GHz frequency band to provide secure, high-quality audio with minimal interference from other wireless devices. This technology supports clear voice transmission even in dense office environments with multiple wireless signals.
Its mono sound mode focuses audio output through a single earpiece, allowing users to maintain situational awareness while on calls. The headset offers dual earpiece design options—earbud and on-ear—accommodating different comfort preferences and wear durations.
Relevant factors for this section include Connectivity Technology, Wireless Technology, Sound Mode, Earpiece Design. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The Poly CS540 top-only headset combines wireless freedom with professional-grade audio clarity, making it a practical choice for sustained communication tasks. Its design prioritizes user comfort and reliable performance in demanding calling environments.
Flexible Wear Options
Choose between earbud or on-ear configurations to match personal comfort preferences and extended wear requirements.
- Earbud design for discreet, lightweight fit
- On-ear option for secure placement during movement
Clear Voice Capture
The boom microphone effectively captures voice while minimizing background noise, ensuring your communications remain intelligible.
- Boom design positions mic close to mouth
- Reduces ambient noise interference
Wireless Mobility
DECT 6.0 wireless technology provides reliable connectivity without cords, allowing freedom of movement within range.
- Interference-resistant 1.9 GHz frequency
- Secure digital transmission
Deployment / Use Cases
This CS540 top-only headset serves as a replacement component for existing Poly CS540 wireless headset systems, extending their lifespan by providing a fresh earpiece and microphone assembly. It's particularly valuable in environments where headsets experience regular wear or where multiple users share equipment.
The mono audio format and wireless design make it well-suited for call center agents, customer service representatives, and remote workers who need hands-free communication while maintaining awareness of their surroundings. The in-ear form factor and lightweight construction support all-day comfort during extended calling sessions.
Replacement for Worn Components
Refresh existing CS540 systems by replacing the top assembly when earpieces or microphones show wear.
- Compatible with CS540 base stations
- Maintains system functionality
Professional Voice Applications
Ideal for sustained calling environments where clear voice transmission and user comfort are priorities.
- Call centers and help desks
- Remote work and teleconferencing
Physical Profile
The CS540 top-only headset features an in-ear form factor that sits securely within the ear canal, providing stable audio delivery without bulky over-ear components. At approximately 4.59 ounces (130 grams), it maintains a lightweight profile that minimizes fatigue during prolonged use. The design accommodates both earbud and on-ear wearing styles through interchangeable components, allowing users to select their preferred fit.
- Weight
- 4.59 oz (130 g)
What's in the Box
This product ships as the top assembly only, providing the essential headset components without additional accessories or base station equipment.
Package contents include Headset (top only). These included items support setup, installation, and immediate deployment without needing to source the core bundled accessories separately.
Highlights
- Wireless DECT 6.0 connectivity for cord-free mobility
- Mono sound mode maintains situational awareness
- Dual earpiece options: earbud and on-ear designs
- Boom microphone for clear voice capture
- In-ear form factor provides secure, comfortable fit
- Lightweight construction at 4.59 oz (130 g)
- Top-only assembly for replacement or spare use
- Compatible with Poly CS540 headset systems
Specifications
| Specifications | |
|---|---|
| Manufacturer | HP Inc. |
| Manufacturer Part Number | 85T27AA#ABA |
| Brand Name | Poly |
| Product Model | Spare CS540 |
| Product Name | Spare CS540 Headset |
| Product Type | Headset |
| Technical Information | |
| Connectivity Technology | Wireless |
| Wireless Technology | DECT 6.0 |
| Sound Mode | Mono |
| Earpiece | |
| Earpiece Design | Earbud,On-ear |
| Earpiece Type | Monaural |
| Microphone | |
| Microphone Design | Boom |
| Physical Characteristics | |
| Form Factor | In-ear |
| Weight (Approximate) | 4.59 oz (130 g) |
| Miscellaneous | |
| Package Contents | Headset (top only) |
User Manual
FAQ
What wireless technology does the Poly CS540 headset use?
The Poly CS540 headset uses DECT 6.0 wireless technology, which operates on the 1.9 GHz frequency band. This standard provides secure digital audio transmission with minimal interference from other wireless devices, making it reliable for professional voice applications in office environments.
Is this headset mono or stereo?
This headset features mono sound mode, delivering audio through a single earpiece. Mono audio is ideal for voice communication as it allows users to maintain awareness of their surroundings while on calls, which is particularly useful in call center or office settings where environmental awareness is important.
What earpiece options are available with this headset?
The CS540 headset supports both earbud and on-ear earpiece designs. The earbud option fits discreetly inside the ear canal, while the on-ear design rests on the outer ear. This flexibility allows users to choose the wearing style that best matches their comfort preferences and extended wear requirements.
What type of microphone does this headset have?
This headset features a boom microphone design that positions the microphone close to the user's mouth. The boom design helps capture clear voice audio while minimizing background noise, ensuring your communications remain intelligible during calls, conferences, or recordings.
Is this a complete headset system or a replacement part?
This product is the top-only assembly of the Poly CS540 headset, meaning it includes the earpiece and microphone components but not the base station. It's designed as a replacement or spare part for existing CS540 systems, allowing you to refresh worn components or extend the life of your current setup.
How much does the CS540 top-only headset weigh?
The CS540 top-only headset weighs approximately 4.59 ounces (130 grams). This lightweight construction helps minimize fatigue during extended wearing periods, making it comfortable for all-day use in professional calling environments like call centers, help desks, or remote work setups.
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