Home › Body Cameras › Xignal M540
Xignal · 4G helmet mounted
Xignal M540 4G Helmet Body Camera
The only helmet-mounted model in the range. A 77 mm camera head on the helmet and a separate battery unit with its own screen on the belt, giving 13 hours or more of recording with the weight off the head.
Supplied and configured for use across the GCC
Overview
What the M540 does
Everything the chest-worn models do, from the helmet. The camera head is the small part: 77 by 54 by 34 mm with a 0.78-inch OLED, so what sits on the helmet stays light enough to wear for a full shift.
The battery lives in a separate belt-worn unit with its own 2.3-inch display and a 1,500 mAh cell, working alongside the 2,700 mAh main battery. Between them they give 13 hours or more of recording.
Where it fits best
- Motorcycle and mounted patrol units
- Fire, rescue and confined-space work where hands stay free
- Industrial and utilities inspection under hard-hat rules
- Any role where a chest camera faces the wrong way
- Teams needing the officer's actual eyeline on record
Not sure this is the right model? Compare all nine or talk to us.
Full specifications
Every published figure
The complete M540 specification, as published by the manufacturer.
- Video resolution
- 2560 × 1440 · 2340 × 1296 · 1920 × 1080 · 1280 × 720 · 720 × 480
- Photo resolution
- Up to 2560 × 1920
- Video codec
- H.265 / H.264
- Video format
- MP4
- Recording format
- MP4 / WAV / MP3
- Photo format
- JPEG
- Field of view
- Not published
- Camera sensor
- Sony 335
- Front camera
- 5 MP
- Illumination
- Four white-light lamps, automatic or manual
- Pre-event record
- Up to 180 s
- Post-event record
- Up to 300 s
- Segment length
- 5 / 10 / 15 / 20 / 25 / 30 minutes
- Main battery
- 2,700 mAh, not replaceable
- Recording time
- ≥13 hours
- Charging time
- 3 hours
- Data interface
- Type-C, USB 2.0
- Capacity
- 1,500 mAh, not replaceable
- Display
- 2.3-inch LCD, 480 × 320
- Dimensions
- 73 × 56 × 32 mm
- System memory
- 4 GB RAM + 64 GB ROM
- TF card
- 16 GB to 512 GB
- Video encryption
- AES-256
- 4G LTE
- GSM, WCDMA, TD, FDD-LTE and TDD bands
- WLAN
- 802.11 b/g/n/ac, AP and station mode
- Bluetooth
- BT 5.0 and BT 2.1 + EDR
- NFC
- Supported
- Positioning
- GPS + AGPS + GLONASS
- Operating system
- Android 12
- Processor
- MTK6769
- Camera head (L × W × D)
- 77 × 54 × 34 mm
- Screen
- 0.78-inch OLED, 80 × 128
- Indicator
- Three-colour working light
- IP rating
- IP68
- Drop test
- 2 metres
- Operating temperature
- −20 °C to +60 °C
Figures published by the manufacturer. Storage capacity is set at order, so confirm the configuration on your quotation. Helmet fitting varies by helmet type, so send us the model you use.
Supply
What arrives, and what to order with it
What arrives with the camera, and the parts usually ordered with it.
Ships as standard
- Camera head
- Belt-worn battery unit with display
- Connecting cable
- USB Type-C cable
Docking and charging
- Single-bay docks
- Multi-bay docks
- Eight-port dock with a 7-inch screen
- Removable drive bay
Helmet mounting
- Helmet side mount
- Helmet front mount
- Adhesive and strap fittings
- Belt clip for the battery unit
Accessories
What goes on the order with it
The same docks, mounts and spares fit every camera we supply.
Docking stations
- Single-bay docks
- Multi-bay docks for a station or vehicle bay
- Eight-port units with a screen and a removable drive bay
- Charging and offload in one action
Mounts and harnesses
- Chest harness for shirt and jacket
- Shoulder and epaulette mounts
- Belt and pocket clips
- Helmet mounts where the model supports it
Batteries and power
- Spare battery packs
- Hot-swap batteries where the model supports it
- USB Type-C cables
- Mains adapters
Compare
How it sits against the alternatives
Two models often considered alongside the M540. The full comparison lives on the range page.
| Xignal M540 | Xignal M530 | Xignal M520 | |
|---|---|---|---|
| Max resolution | 2560 × 1440 (1440p) | 2560 × 1440 (2K) | 1920 × 1080 (H.265) |
| Field of view | Not published | Not published | Not published |
| Connectivity | 4G · Wi-Fi · GPS · NFC | 4G · Wi-Fi · GPS · NFC | 4G · Wi-Fi · GPS · intercom |
| Battery | 2,700 mAh + 1,500 mAh unit, ≥13 h | 3,200 mAh replaceable, ≥10 h | 3,200 mAh, runtime not confirmed |
| Sealing and drop | IP68, 2 m drop | IP68, 2 m, MIL-STD-810G | IP68, 2 m drop |
| Worn | Helmet | Chest / shoulder | Chest / shoulder |
| You are here | View the M530 | View the M520 |
Scroll sideways to see every column.
Questions
Before you specify the M540
Questions we are asked about this model.
Why put the camera on a helmet instead of the chest?
Because on some roles the chest faces the wrong way. A motorcycle officer’s chest points at the tank. A firefighter crawling a corridor has their chest on the floor. An inspector reaching into a machine has their chest against it. The helmet gives you the officer’s actual eyeline, which is also the angle a court finds easiest to follow.
How heavy is it on the head?
Only the camera head goes on the helmet, at 77 by 54 by 34 mm. The battery, the bigger screen and the bulk sit in a separate unit on the belt. That split is the whole design argument for this model: a helmet camera that carries its own battery gets uncomfortable within an hour.
Does it fit our helmets?
Usually, but do not take that on trust. Fitting varies by helmet shell and by whether you are working to a standard that forbids drilling or adhesive. Send us the helmet make and model you issue and we will confirm the mount before you order, not after.
Why white light rather than infrared?
Four white-light lamps with automatic or manual control. White light records in colour, which matters when the point of the footage is identifying a vehicle, a cable, a valve or clothing. It is also visible, so people can see they are being lit, which some deployments want and others do not. If you need covert night capability, the infrared models are the answer.
What field of view does the M540 have?
The manufacturer does not publish one, so neither do we. If lens coverage is a specified requirement in your tender, tell us and we will get it confirmed by the manufacturer in writing before you commit to it.
Can the battery be changed mid-shift?
No. Both cells, the 2,700 mAh main and the 1,500 mAh unit, are non-replaceable. The trade is a runtime of 13 hours or more, which is longer than any chest-worn model in the range except the V500, and better sealing with no battery door on the helmet.
The range
Other models worth comparing
Three other models in the range, and what each one changes against the M540.
Xignal · 4G
M530
2K
2K recording, a swappable cell and 180 seconds of pre-event capture.
Xignal · 4G
M520
−1080p H.265
H.265 encoding and trunking intercom, so it works as a radio too.
Xignal Pro · 5G
M535
+4K+5G
4K on 5G, two swappable cells and a dedicated night vision sensor.
What the rules ask
The M540 Against Common Requirements
The rules differ by country, but they ask the same things of the footage: that it can be shown to be unaltered, that only authorised people saw it, and that the people recorded were told. They also tend to reach further than buyers expect, covering inspectors and contractors working for a public body as well as police.
No camera answers all of it on its own. What follows is each requirement, and the part of the system that meets it.
- Encrypted, tamper-protected storage: AES-256 applied on the device as footage is written
- Retention managed to policy: configurable retention rules on a private server you control
- A register of authorised users and access levels: roles and permissions in evidence management
-
No copying to personal devices: extraction runs through the dock, with no removable-media
path off the camera - Sharing only on written approval: every share carries an approval record and an audit entry
- People must be told they are being recorded: front-facing indicator and pre-record announcement
- Training before officers are deployed: an obligation that sits with the deploying entity rather than the hardware
Get a quotation for the M540
Tell us how many officers, whether you need live streaming, and how long footage has to be retained. We will come back with a configured quotation, including docks and storage.
