Ocean Signal M100/M100X Review
Research checked · Not scored

Review
Manufacturer information and review searches have been checked. No eligible independent overall rating was verified, so this product remains unscored.
How we calculate scores →About this gear
The M100 and M100X are surface man-overboard beacons with AIS position broadcasts, GPS and 121.5 MHz homing. The manufacturer lists more than 12 hours of transmission and a five-year battery interval.
Consider before buying
This catalogue entry covers two variants. Only M100X is identified as having the stated ATEX and IECEx Zone 2 approvals; those claims must not be transferred to M100. Neither is a 406 MHz satellite PLB.
Our take
Choose the exact variant around the vessel’s receiving equipment and work environment. PLB3 is the relevant comparison when satellite alerting is required. Confirm lifejacket compatibility and regional availability rather than treating automatic activation as an installation-free feature.
Specifications at a glance
- Equipment type
- Marine safety equipment
- Variants
- M100; M100X
- Signals
- AIS and 121.5 MHz
- Dimensions
- 132 × 53 × 28 mm
- Battery interval
- Five years
- Hazardous-area variant
- M100X only
Compare an alternative
A closer look at M100/M100X
Editorial profile written
Facts listed by the source
- SKU
- 742S-02087 (M100) / 742S-02088 (M100X)
- Listed weight
- N/A
- Listed dimensions
- N/A
Options in a listing may refer to different variants. Confirm the exact version and package before ordering.
Questions to settle before buying
This checklist uses a provisional grouping from the catalogue name. Confirm the intended use in the manufacturer instructions.
- What is the exact part number and compatible model or revision?
- Is fitting a user task or does the manufacturer require an authorised technician?
- Does the listed package contain the quantity and fittings you need?
Explore the related equipment section →
What still needs checking
No eligible exact-model independent overall rating verified; cycle23 records sources and limitations.
We have not yet added independent review evidence for this entry. Manufacturer claims do not establish long-term reliability, value or a performance score.
Where this research comes from
Read the source ↗ · Open the product listing ↗
Exact product name and URL in manufacturer feed · cached source, collected 2026-10-02 · Catalogue audit 2026-10-02.
Source matching and feature extraction are automated. An editorial profile, independent review and hands-on test are separate things; none is implied by this audit.










