HP Poly CS540A DECT Wireless Headset with Deluxe Charging Cradle

Experience crystal-clear DECT wireless freedom with a range up to 120 meters and wideband audio, so every conversation feels natural even when you step away from your desk.

Overview

The Poly CS540A is a professional wireless headset system built for desk phone users who need mobility without compromising call quality. It operates on DECT 6.0 in the 1880–1900 MHz frequency band, ensuring secure, interference-free communication. The convertible design lets you wear it over-the-ear, over-the-head, or behind-the-neck, adapting to your comfort throughout the day. A noise-cancelling microphone filters out background distractions, while Digital Signal Processing (DSP) and SoundGuard technology protect your hearing and deliver rich, clear audio.

What stands out

• Up to 120 meters wireless range for true mobility around the office
• Convertible wearing style with included ear tips, ear loops, and headband
• Noise-cancelling microphone with wideband audio for natural conversations
• DECT Security certified for encrypted communications
• Deluxe charging cradle included for convenient docking and charging

Technical details

• Connectivity: DECT 6.0 (1880–1900 MHz)
• Talk time: up to 7 hours
• Standby time: up to 30 hours
• Charge time: approximately 3 hours
• Headset weight: 21 grams
• Battery: rechargeable lithium-ion polymer
• Base unit connectivity: RJ-11 for desk phone, power port
• Controls: call answer/end, volume up/down, mute
• Compatibility: desk phones (EHS cable or HL10 lifter required for remote call control, sold separately)
• Included accessories: headset, base unit, power supply, telephone interface cable, ear tips, ear loops, headband

Our verdict

The Poly CS540A delivers enterprise-grade wireless performance in a lightweight, versatile design. Ideal for busy professionals who need reliable, secure communication with the freedom to move.