LEGIONELLA MONITORING DEVICE (125H)
Designed specifically to monitor and report on Legionella compliance, the ISL125H measures the water temperature of up to four pipes using external pipe-mounted temperature probes. By continuously monitoring the pipe temperatures, it is possible to show compliance with legionella regulations, reducing site visits and cost.
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Connection for up to four external temperature probes
- Two pulse inputs
- Battery powered
- Wall bracket mounting options
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Temperature alarm threshold hysteresis
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Temperature Edge Intelligence (thresholds – warning, alarm)
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Configurable transmit interval for each mode (standard, warning and alarm)

KEY FEATURES
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Long Battery Life
Our sensors have been designed to have a battery life of up to 10 years, so you don't have to worry about changing them frequently.

Reduce Costs
Identify problems before damage occurs to stop waste, prevent costly site shutdowns and reduce your fuel consumption.

A Proven Partner
At Invisible Systems, we've worked in IoT for over 17 years. Our solutions have a proven track record in supporting businesses.
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Real-Time Online
Together with Real-time Online, the sensors enable constant monitoring, deliver pro-active alerts on threshold breaches and generate bespoke reports

Reduce Carbon Emissions
Our products have been proven to reduce carbon emissions by as much as 83% on some construction sites
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Easy to Install
Choosing wireless sensors and a cloud platform enables you to reduce your installation and maintenance costs.
ADDITIONAL INFORMATION
CONFIGURABLE THRESHOLDS
Configurable high/low thresholds allow different transmit intervals when thresholds are crossed providing advanced edge intelligence to the network, and enable alarms to be generated by Realtime-Online™.REAL-TIME MONITORING
NB-IOT
TECHNICAL DATA
COMMS |
Band: 1, 3, 5, 8, 20, 28 Expected range (line of sight): Up to 10km Power: 23dBm ± 2dB |
APPROVALS |
CE, other regions available on request |
ENVIRONMENTAL |
Dimensions (mm): 144x65x40 Enclosure colour: Black Enclosure plastic type: ABS Operating Temp Range: -20°C to +60°C Battery: 1 x C-cell (8500 mAh) Batteries type: Lithium Thionyl Chloride (Non rechargeable) Expected battery life, 15 min Tx interval: Up to 3 years Expected battery life, 6 hour Tx interval: Up to 10 years Operating lifetime: Up to 10 years Power type: Battery 3.6VDC |
SENSOR FEATURES |
Measurement interval range : 30 secs - 60 mins Tx interval range : 15 minute - 24 hours |
TEMPERATURE |
Measurement Range: -20°C to +100°C Accuracy:
Resolution/Step-size: 0.5°C Drift: 0.05°C over lifetime Sensor characteristics: Digital Calibration: Optional |
TEMPERATURE INPUTS |
Temperature probes: Up to 4 - any combination of Pipe & Stainless steel pocket (submersible) probes Cable: 1m PVC Ribbon |
PULSE INPUTS |
Pulse inputs: 2 Pulse measurement frequency (max): 2Hz Pulse inputs: 1m 4-core PVC (optional) |
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