Protimeter BLE Environmental Logger — 20 Pack
Twenty compact Bluetooth loggers, each measuring and recording relative humidity, temperature and moisture content in building materials. They pair to a free app on iOS or Android and log unattended, so a building can be monitored over weeks or months without anyone standing in front of an instrument.
Why twenty
Moisture problems are spatial. One logger tells you a room's condition; twenty tell you which room, which wall and which floor level the problem sits in, and how each responds as drying progresses. On a large loss or a long-running monitoring contract, deploying a grid is the difference between an opinion and a record.
What it measures
- Relative humidity, 0–100% non-condensing
- Temperature
- Moisture content in building materials, including timber and plasterboard, as %WME
Specifications
Per logger. Part number BLD2025; this listing supplies twenty.
| Data storage | Up to 1,000 readings per logger |
|---|---|
| Relative humidity | 0–100% non-condensing. Accuracy ±2% RH between 20% and 80% |
| Moisture content | Accuracy ±1% WME between 8% and 30%; ±3% outside that range |
| Operating conditions | −20°C to +50°C |
| Storage conditions | −40°C to +50°C |
| Environmental protection | IP65 — dust tight and protected against water jets |
| Connectivity | Bluetooth Low Energy, range up to 10 m depending on building structure |
| Power | CR2450 coin cell, replaceable. Battery life can exceed one year depending on logging interval |
| Size | 53 × 67 × 23 mm |
| Weight | 60 g |
| Warranty | 12 months on mechanical or manufacturing defects. Excludes wear on accessories |
Note on warranty
The BLE logger carries a twelve-month warranty, not the twenty-four months that applies to Protimeter's handheld instruments. That is the manufacturer's term and we state it here rather than let it come as a surprise.
Applications
- Long-term drying documentation on water damage losses
- Early warning of conditions that favour mould growth
- Monitoring heritage buildings, archives and stored artefacts
- Verifying that a remediated area stays dry after the equipment leaves
- Building performance monitoring where no cabling is practical
Frequently asked questions
Are there ongoing fees?
No. The app is a free download from the Apple App Store and Google Play, and there is no subscription.
How long will the batteries last?
In excess of a year is achievable, and it depends entirely on the logging interval you set. Frequent intervals shorten it considerably. The cell is a standard CR2450 and is replaceable.
Can it be left in a wet environment?
The housing is IP65, so dust and water jets are not a problem. Protimeter does note that prolonged exposure to high humidity and dew point can cause long-term drift in the humidity sensor, so a logger that has spent months in a saturated environment should be checked before it is relied on for reporting.
How far does Bluetooth reach?
Up to about 10 m, less through masonry or steel. Loggers store their readings on board, so being out of range does not lose data — it only means you collect it when you next walk within range.
Can I buy a single logger?
This listing is the twenty pack. Contact us if you need a smaller quantity and we will quote it.
Documents
Protimeter does not publish a separate instruction manual for the BLE logger; setup is handled in the app and the datasheet is the manufacturer's reference.
Planning a monitoring deployment and unsure how many loggers a site needs? Contact Carpet Cleaners Warehouse and we will work it through with you.




