HP Poly CS540A Wireless DECT Convertible Headset
PRODUCT DESCRIPTION
HP Poly CS540A Wireless DECT Convertible Headset (8J8V4AA) - Local Warranty
Wireless Freedom for Desk-Phone Users
The HP Poly CS540A is a lightweight DECT wireless headset that connects to an office desk phone, letting staff take calls while they walk to a colleague, a printer or a filing cabinet. HP quotes a roaming range of up to 400 ft (about 120 m) from the base, and up to four headsets can be conferenced on a single base.
Three Ways to Wear It
The CS540A is a convertible design with three wearing options — over-the-ear, over-the-head and behind-the-head — and the box includes a headband plus a kit of eartips and earloops. At 21 g for the headset, it suits reception, front-desk and operations staff who wear a headset for much of the day.
Clear Audio and Hearing Protection
A noise-cancelling microphone and Digital Signal Processing keep voice natural, and the base lets you choose narrowband audio to extend talk time or wideband audio for high-definition voice. SoundGuard limits sounds to below 118 dBA to protect against acoustic shock and sudden audio spikes.
Remote Call Answering
With the optional HL10 Handset Lifter or an Electronic Hook Switch (EHS) cable, users can answer and end desk-phone calls away from the desk. HP’s adaptive power system also drops to low power when the headset is close to the base, conserving battery; HP rates talk time at up to 7 hours.
HP Poly CS540A Datasheet — Technical Specifications
Every figure below is taken from HP’s published product specification and product page for this exact part number. Where HP does not publish a value, the row is omitted rather than estimated.
General
| Model | HP Poly CS540A |
| HP product name | Poly CS540A DECT 1880-1900 MHz Headset |
| Part Number | 8J8V4AA (HP SKU) |
| Product type | Wireless DECT headset system |
| Wearing style | Convertible — over-the-ear, over-the-head, behind-the-head |
| Colour | Black |
| Warranty | Local Warranty (Singapore) |
Wireless & Audio
| Wireless technology | DECT™, 1880-1900 MHz |
| Range | Up to 400 ft from the base |
| Conferencing | Up to four headsets on a single base |
| Audio | Narrowband or wideband (selectable) |
| Speaker bandwidth | 20 Hz to 6.8 kHz (narrowband or wideband) |
| Nominal sound pressure level | 118 dB SPL |
| Microphone type | Noise cancelling |
| Acoustic protection | SoundGuard (limits sounds to below 118 dBA) |
Battery, Power & Physical
| Battery life | Up to 7 hours (talk time) |
| Charging type | 1-way base |
| Power | AC power adapter (included) |
| Headset weight | 21 g |
| Package dimensions | 164.5 × 165 × 182 mm (W × D × H) |
| Package weight | 610 g |
Compatibility & Software Support
Desk phones
HP lists this part number as “Compatible with desk phones via RJ-11 cable or DECT™”. The base connects to the desk phone using the telephone interface cable (TIC) included in the box, and the headset’s audio controls simplify call handling at the desk.
Remote answering accessories
HP states that the CS540A is compatible with the HL10 Handset Lifter or an Electronic Hook Switch (EHS) cable for remote call answering. Neither is in the box; the right option depends on the desk-phone model, so tell us the phone make and model and we will quote the matching accessory.
Operating systems
HP’s specification also lists Windows 11, Windows 10 and macOS as compatible operating systems for this part number. The CS540A is primarily a desk-phone headset; if the main use is a PC softphone, ask us about a USB or Bluetooth model instead.
Package Contents & CS540A Ordering Information
In the box
- Office base
- AC power adapter
- Headband
- Telephone interface cable (TIC)
- Headset with pre-installed battery, eartip and earloop
- Kit with eartips and earloops
HP publishes the box contents above for this exact part number.
HP Poly CS540A — Ordering Information
| HP Poly CS540A Wireless DECT Convertible Headset — DECT 1880-1900 MHz (this listing) | 8J8V4AA |
| HL10 Handset Lifter or Electronic Hook Switch (EHS) cable — for remote call answering | Quoted on request to match your desk phone |
Datasheet & Downloads
Frequently Asked Questions — HP Poly CS540A Wireless DECT Convertible Headset
What phones does the CS540A work with?
HP lists it as compatible with desk phones via RJ-11 cable or DECT™. The base connects to the phone with the telephone interface cable supplied in the box.
How far can I walk from my desk?
HP quotes a range of up to 400 ft (about 120 m) from the base. Actual range depends on walls and the office layout.
Can I answer calls when I am away from my desk?
Yes, with an optional HL10 Handset Lifter or an Electronic Hook Switch (EHS) cable, which are sold separately. We can advise which one suits your desk phone.
How long does the battery last?
HP rates talk time at up to 7 hours. The adaptive power system reduces power when the headset is close to the base to conserve battery.
Can it be worn in different ways?
Yes. It is a convertible design that can be worn over the ear, over the head or behind the head. A headband and a kit of eartips and earloops are included.
Is local Singapore warranty included?
Yes. Every HP Poly CS540A Wireless DECT Convertible Headset sold by SourceIT comes with local Singapore warranty and a GST invoice.
