LEGIONELLA LOGGER (124A)
Designed to measure the water temperature in 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
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Battery powered
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Wall bracket mounting options
- Built in antenna
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Temperature alarm threshold hysteresis
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Temperature Edge Intelligence (thresholds – warning, alarm)
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Available as a ‘data as a service’ offering
- Configurable transmit interval for each mode (standard, warning and alarm)
- Configured over the air from ISL LoRa™ USB dongle

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.
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PROACTIVE ALARM SYSTEM
Pro-active alerts ensure that your team can prevent any critical level breaches.

PROVEN PARTNER
Invisible Systems are trusted by clients in both the public and private sectors. You can rely on us to deliver an outstanding level of service.
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PERSONALISED DASHBOARDS
Our online monitoring software, Realtime Online is set-up to meet the specific needs of your organisation.
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SIMPLE SET-UP
Our sensors are easy to set up and do not require integration with your existing IT infrastructure.

LOWER COSTS
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
LORA
The 124B transmitter connects to the cloud via Invisible Systems cellular LoRa™ gateways, providing low power, reliable communication and long battery life. Invisible Systems can provide their in-house built Realtime-Online™ cloud portal to make this an ideal low-cost end-to-end solution.
LORAWAN
The ISL124B is a LoRaWAN certified device and Invisible Systems are members of the LoRa alliance. It offers both ABP and OTAA activation options and is designed to work with all LoRaWAN gateways and network servers.
TECHNICAL DATA
COMMS |
Frequency/Band (LoRa): EU 868Mhz Other regions available on request Frequency/Band (LoRaWAN): EU863-870 Other regions available on request Expected range (line of sight): Up to 10km Power: LoRaWAN 25mW (14 dBm) LoRa: 100mW (20 dBm) |
APPROVALS |
Approvals: CE, FCC, IC, Other regions available on request FCC ID: Contains module VPYCMABZ ICID: Contains module 722C-CMABZ |
ENVIRONMENTAL |
Dimensions (mm): 70x70x24 (excl bracket) Enclosure colour: White Enclosure plastic type: ABS Operating Temp Range: -20°C to +60°C Battery: 1 x AA (2400 mAh) Batteries type: Lithium Thionyl Chloride (Non rechargeable) Expected battery life, 15 min Tx interval: Up to 2.6 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: 10 secs - 60 mins Tx interval range (multiple of measure intervals): 1 min - 6 hours |
TEMPERATURE |
Measurement Range: -20°C to +60°C Accuracy: ±0.25°C (typical) Resolution/Step-size: 0.5°C Drift: < 0.05°C over lifetime Sensor characteristics: Digital Calibration: Optional Probe Up to 4 - combination of Pipe & Stainless steel pocket (submersible) probes (with max 1 Cable 1m PVC Ribbon |
PULSE/STATUS INPUTS |
Digital Status Inputs: 2 Pulse measurement frequency 2Hz Cable 1m 4-core PVC Ribbon (optional) |