WiFi PT100 Temperature Transmitter
Part No: RF616 (5306357)All New! The Diligence 600 WiFi PT100 Temperature Transmitter is designed to monitor an external high-accuracy PT100 probe and the ambient temperature of your storage and work areas with its integral sensor.
- Battery Powered
- Integral Temperature Sensor
- Designed for a single External PT100 Channel
- High Accuracy (Transmitter) +/-0.1°C/0.2°F
- Connects to your Local Wi-Fi Network
- Designed for Easy Self-Installation
Directly connect a single Lumberg PT100 probe to suit your individual requirements.
WiFi PT100 Temperature Transmitter
The WiFi PT100 Temperature Transmitter (RF616) is a highly scalable solution, designed to monitor the temperature of your critical items by means of a highly accurate PT100 probe offering a wide range and capable of ultra-low temperature measurement, whilst also allowing for ambient storage and work areas with an integral sensor.
Designed with your needs in mind
We’ve used our knowledge and experience from over sixty years of developing, selling and installing temperature monitoring solutions to not only create a highly capable product that is based around your needs, but which is also adaptable to those needs as they change and evolve over time.

Designed with your needs in mind
We’ve used our knowledge and experience from over sixty years of developing, selling and installing temperature monitoring solutions to not only create a highly capable product that is based around your needs, but which is also adaptable to those needs as they change and evolve over time.

Secure WiFi Connectivity
The Diligence 600 WiFi Monitoring System has been designed around 2.4GHz WiFi (IEEE 802.11b/g/n) technology, allowing you to use your existing WiFi infrastructure without the need for a gateway or hub device.
All data sent by the transmitters of your Diligence 600 WiFi Monitoring System to the Diligence Cloud, is in a non-human readable proprietary format. Transmitters open outbound TCP connections (TCP Port 8080) to send and receive TLS-encrypted data including time, recordings, alarms, settings and firmware updates. TLS is two-way using both client and server certificates, and the communication format is proprietary. Firewalls and content filters that intercept TLS traffic should not do so on this port.
The Diligence 600 WiFi Monitoring System devices will turn the radio signal off between WiFi transmissions. The sensors do not offer any kind of web page and will not respond to any request on any port other than required by essential network services e.g., DHCP.
The Diligence 600 WiFi Monitoring System devices will turn the radio signal off between WiFi transmissions and will not respond to communication.

Powerful Data Storage and Management Platform
Data Management Platform

The Diligence Cloud is our most advanced data storage and management platform yet! It offers users a quick and dynamic way to access and drill-down into the data from any device that is being monitored.
The Diligence Cloud Dashboard View delivers a concise overview of your estate of devices, to help you resolve issues more quickly, saving products, time and money.
The Diligence Cloud provides secure, multi-user access to data records and audit trails, from any web-browser enabled device. It is fully scalable to meet the demands of monitoring multiple devices across multiple sites, in line with your monitoring, data logging and compliance requirements.
Technical Specifications
Name | Value |
---|---|
Integral Temperature Sensor Specifications: | |
Sensor Type | Thermistor |
Scales | °C and °F |
Temperature Measurement Range | -18°C to +55°C (-0.4°F to +131°F) - See Note 1 |
Accuracy 0°C to +55°C (-32°F to +131°F) | <±0.3°C (±0.6°F) - See Note 2 |
Accuracy (full range) | ±0.5°C (±0.9°F) - See Note 2 |
Temperature Resolution | 0.1° |
External Probe Specifications: | |
Number of External Channels | 1 |
Sensor Type | PT100 (4-Wire) |
Connector | 6-Pin Lumberg |
Scales | °C and °F |
Temperature Measurement Range | -200°C to +150°C (-328°F to +302°F) |
Instrument Accuracy (Full Range) | <±0.1°C (±0.2°F) - See Note 2 |
Temperature Resolution | 0.05°C (0.1°F) |
Common Specifications (All Models Excluding RF612): | |
Hi/Lo Alarm - All Channels excluding Door Switch | H and Lo Alarms with Alarm Delay and fully selectable Alarms |
Alarm Delay 0-60 minutes - All Channels excluding Door Switch | Delay is programmable for either H H or Hi Hi Alarms or both independently |
Ambient Operating Temperature Range | -18 to +55°C (-0.4°F to 131°F) - 10-90% RH - Non-Condensing - See Note 1 |
Storage Temperature | -18 to +55°C (-0.4°F to 131°F) - See Note 1 |
Wireless Frequency | 2.4GHz Wi-Fi (IEEE 802.11b/g/n) |
Wireless Security | WPA2 Pre-Shared Key - See Note 3 |
Radio Range | Typically, 20 metres indoors |
Clock Accuracy | 20ppm (1 minute/month) at +25°C (+77°F) |
Logging Memory | 140,000 Max records - Depends on number of active channels |
Log Rate | Programmable between 1 minute and 60 minutes |
Channel Monitoring Rate | 1 Minute |
Wireless Radio Rate | Programmable between 5 Minutes to 24 Hours - See Note 5 |
Alarm/Active LEDs (Front) | RED - ALARM / GREEN - External Power |
Status LEDs (Side) | RED - Wi-Fi Active / YELLOW - Communications Active / GREEN - Mains Power Connected |
Case Material | Over Moulded food safe clear Polycarbonate with BioCote® Antimicrobial Protection |
Environmental Protection | Case enclosure designed to meet IP65 BS EN 60529 |
Battery Type | 4 x AA Alkaline or Energizer MAX Lithium - See Note 4 |
Battery Life | Up to 1 year |
Dimensions | Length 110mm, Height 100mm, Depth 45mm |
Weight | 300g |
Warranty | 2 Years |
Notes: | |
1 - Temperature and Storage range with Energizer Lithium L91 Cells is expanded to -30 to +60°C (-22°F to +140°F) | |
2 - When used with a Comark Probe | |
3 - Other Wi-Fi Security Options will be provided by Firmware Update | |
4 - Use Energizer MAX L91 for improved battery life in all applications but especially recommended for use in low temperature applications | |
5 - The Wi-Fi Rate should be set for 4 hours or greater for best battery life. This will not affect Alarm Notifications |
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Documentation
- RFPP300
PT100 Penetration Probe (3m Lead)
- RFPP100
PT100 Penetration Probe (1m Lead)
- RFAP300
PT100 Air Probe (3m Lead)
- RFAP200
PT100 Air Probe (2m Lead)
- RFAP100
PT100 Air Probe (1m Lead)
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