120 m of freedom around the DECT radio base: you can move away from your desk without leaving the call. Barely 21 g, with the remote answering kit to pick up away from the phone.
Wireless DECT link through a radio base, range up to 120 m
Mono, a single earcup (you stay aware of the office)
Three wearing styles: over-the-ear, headband or neckband
Noise-cancelling boom microphone
Weight 21 g
Battery life 7 h in conversation
Remote answering of the phone thanks to the AP11 kit
Conferencing possible with up to four headsets on a single base
Charging base supplied
On-ear cushion
SoundGuard DIGITAL hearing protection
Ref.: 7K2E5AA
No longer sold
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No longer sold
We no longer sell this product. Its page stays online for its specifications and technical documentation.
Product overview
POLY CS540A convertible mono headset: a lightweight wireless DECT headset that gives you freedom of movement in the office, supplied with the AP11 remote call-answering kit. Connectivity:wireless DECT link through a radio base, with a generous range of up to 120 m so you can step away from your desk and stay on the call. Comfort:convertible model that can be worn three ways — over the ear, over the head or behind the neck — so everyone can choose their style; just 21 g on the head. Microphone:noise-cancelling mic boom that filters out background chatter to send a clear voice to the other person. Also: mono earpiece that keeps one ear on your surroundings, charging base, conference calls possible with up to four headsets on a single base, up to 7 h of talk time, SoundGuard Digital hearing protection.
Wireless DECT to the base; base connected to the desk phone via RJ-11 port
Base or stand
DECT base connected to the desk phone via RJ-11 port
Wireless range
Up to 120 m
Headphone sensitivity
118 dB SPL (nominal level)
Hearing protection
SoundGuard
Warranty
1 year
Specific references
EAN
0197192519899
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Frequently asked questions about this product
What is the AP11 kit supplied with this headset for?
For lifting the handset remotely: the kit lifts the handset for you, so you can answer from the other side of the office without going back to your desk. That is what makes the 120 m range truly usable.
How far can you move away with the CS540A?
Up to 120 m from its radio base, over DECT: a wireless link dedicated to telephony, separate from Bluetooth and with a much longer reach. You leave your desk without leaving the call.
In how many ways can this convertible headset be worn?
Three: over-the-ear, headband or behind-the-neck. That is what the word “convertible” means — everyone chooses the wearing style that suits them, on a set weighing just 21 g.
Can you hold a conference call with several headsets?
Yes: up to four headsets can join the same base. This is the feature that turns an individual workstation into a small conferencing set-up, with no additional equipment.
How long does this headset last on calls?
7 hours of talk time, with a supplied charging base on which you rest the headset between calls. The 21 g weight naturally goes hand in hand with a compact battery.
Why a single ear cup on this model?
Because it keeps one ear on your surroundings: in the office or at reception, you can hear your team while staying on the call. The ear cushion is on-ear, resting on the ear.
Does the headset protect your hearing and filter out noise?
Its microphone boom is noise-cancelling — it filters out background chatter for the person you are talking to — and SoundGuard DIGITAL protection keeps the incoming level in check against acoustic shocks.
Is this POLY CS540A with AP11 kit new and under warranty?
Yes, new in its original Poly packaging, AP11 kit and charging base included. Your invoice serves as the warranty document and covers 1 year on this reference, the 7K2E5AA.
Charges by induction and folds flat to fit in a bag. Stereo with hybrid active noise cancelling, with a ClearVoice boom mic, a dedicated Microsoft Teams button and a busylight visible through 360°.
•Stereo, two earpieces
•Hybrid active noise cancelling (ANC)
•Certified for Microsoft Teams, Google Meet and Zoom
Wired stereo headset for contact centres and offices, in a UC version certified for Zoom, Google Meet, Cisco and Unify: three MEMS microphones, Busylight indicator and a Link control unit that plugs into USB-C or USB-A.
The DECT USB adapter plugs in with no installation and reaches up to 150 m. 13 h of talk time, a replaceable battery and a dual microphone that removes background noise.
Up to 35 h of conversation and 30 m of range. Three microphones isolate your voice from office noise, the oval memory foam cushions filter out what surrounds you, and the busy indicator stays visible from every angle.
One ear stays free during the call: four mics and NoiseBlockAI filter out chatter and wind. 10 h of talk time, 30 h with the included wireless charging case, and a USB-C dongle for the computer.
Up to 30 m of Bluetooth range, 16 h of talk time and a simultaneous connection to the computer and the smartphone. In an open-plan office, the Busylight indicator turns red as soon as you are on a call.
Two microphones share the work in a contact centre: one erases the background noise, the other conveys your voice. Built-in call control unit, busylight and real-time call analysis with the Engage+ software.
Built for heavy contact-centre use: Kevlar-reinforced cord, a 360° rotating boom arm that will not break and an Air Shock noise-cancelling microphone. A control unit handles volume, mute and calls.
•Stereo, two earpieces
•
•
UC version: Zoom, Google Meet, Cisco, Unify
•Link USB-C control unit, USB-A adapter
•3 MEMS microphones
In stock
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Delivery everywhereDelivered all over Morocco
Jabra Link 400 DECT USB-A adapter included, ready to use
•Range up to 150 m
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A dedicated button to open Teams, and an alert warns you when you speak with the mic muted. Up to 16 h of talk time with active noise cancelling, 25 h without.
•Hybrid active noise cancelling, 3 levels
•Up to 16 h in conversation with noise cancelling, 25 h without
•Up to 24 h of music listening with noise cancelling, 40 h without
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•
Microsoft Teams certified
•3 microphones set in the boom to isolate your voice from office noise
•Battery life 35 h in conversation
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Jabra BIZ 2300 QD Duo Noise-Cancelling Stereo Headset with Jabra Link 230 adapter - USB plug-and-play (2309-820-104 + 230-09)
A control unit sets the volume and mutes the microphone; the boom turns through 360° with no risk of breaking. Built to last in a contact centre: Kevlar-reinforced cord, 68 g on the head.
•Plugs into the computer with the adapter included, no installation
•Microphone boom that turns through 360° with no risk of breaking (FreeSpin system)
•Air Shock microphone: filters breath sounds and sudden noises
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•
Mono, a single earpiece
•4 noise-cancelling mics, NoiseBlockAI and WindSmart
•10 h talk time, 30 h with the charging case
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Microsoft Teams certified
•Stereo, two earcups
•Jabra Link 390 Bluetooth adapter included
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1 949 DHincl. VAT1 949,00 DHincl. VAT
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•Two microphones: the first removes the background noise, the second conveys your voice
•Built-in control unit: answer, mute the mic, adjust the volume
150 m of range around its DECT radio base, enough to step away from the desk and stay on the call. 13 hours of talk time, a replaceable battery and a busy light against interruptions: a high-end choice for a call centre.
•Mono, a single earpiece (you stay aware of the office)
Two microphones share the work in a contact centre: one erases the background noise, the other conveys your voice. Built-in call control unit, busylight and real-time call analysis with the Engage+ software.
One ear stays free during the call: four mics and NoiseBlockAI filter out chatter and wind. 10 h of talk time, 30 h with the included wireless charging case, and a USB-C dongle for the computer.
The DECT USB adapter plugs in with no installation and reaches up to 150 m. 13 h of talk time, a replaceable battery and a dual microphone that removes background noise.
Microsoft Teams certified, for calls and concentration in an open-plan office: noise-cancelling microphone, leatherette ear cushions that damp the background noise and an in-line controller for volume, calls and mute.
Volume and mute are set straight on the cable, with an indicator light as a reminder that the mic is off. Padded leatherette earpads and 2.4 m of cable to stand up during a call.
Light, with swivelling foam earpads and an adjustable headband: it can be worn for hours through online meetings. The swivelling noise-cancelling mic tucks into the headband once the call is over.
Plugged into a USB port, it works with no driver to install. The microphone boom swivels through 270° to move from one ear to the other, and the in-line remote sets the volume and mutes the microphone.
Headband that extends 38 mm on each side and ultra-soft ear cushions: enough to sit through one video call after another. The microphone boom, on the left, adjusts finely and then swings out of the way when it is no longer needed.
It plugs into a computer as easily as a tablet or a smartphone, with nothing to install. Rotating noise-cancelling microphone to wear on the left or the right, volume and mute on the cable.
