Headset HP POLY CS540A DECT 1880–1900 MHz Wireless, 120 m Range, 21 g, Black

The HP POLY CS540A is a DECT wireless headset operating in the 1880–1900 MHz band, designed for desk-based environments such as offices and call centres. It delivers hands-free voice communication over a secure DECT connection with up to 120 m range and a lightweight earpiece weighing 21 g. The convertible form factor allows quick switching between single-ear and over-the-head wearing styles while maintaining clear speech capture with a noise‑canceling microphone and reliable wireless connectivity for extended telephony workflows.

Advantages

The headset combines a compact and lightweight design with DECT wireless range, providing mobility within an office or customer-service floor without tethering to a desk. Noise‑canceling microphone technology reduces background sounds for clearer calls and reduced listener fatigue. The convertible wearing options and simple call controls support prolonged daily use and quick transitions between tasks.

Suitable for

• Office professionals who need hands‑free calling and mobility within campus or building spaces
• Call centre agents and customer service teams handling frequent voice calls
• Receptionists and desk staff who must switch between headset and handset or move between workstations

Key specifications

• DECT operating band: 1880–1900 MHz
• Wireless range: up to 120 m (line of sight)
• Earpiece weight: 21 g
• Color: black finish
• Microphone: noise‑canceling microphone for improved speech clarity
• Form factor: convertible (single-ear with over‑the‑head option)

How to use

Charge the base and headset according to the manufacturer’s instructions before first use. Pair the headset with its base station to establish the DECT connection, then place the earpiece on the ear and adjust the boom microphone toward the mouth for optimal voice pickup. Use on‑device controls to answer and end calls, adjust volume, and mute the microphone as needed. Move freely within the stated wireless range while maintaining line of sight for best audio performance.

Usage recommendations

For consistent call quality, keep the base station positioned centrally on the desk and avoid physical obstructions between the headset and base. Position the noise‑canceling microphone close to the mouth but out of the direct breath stream. Regularly check battery status and charge the headset during breaks to ensure uninterrupted availability during shift work.