
Setu
Temperature
Single-channel WiFi temperature logger with an internal sensor or external probe.
- Range
- −30 to +70 °C · −100 to +200 °C with external probe
Add the external hooter to your Prithvi setup and you have a data logger with alarm that sounds on site, with up to 4 door sensors. A charging dock keeps a charged spare battery ready. Our team confirms accessory compatibility for your model when we prepare your quote.

Wi-Fi hooter giving instant audible alarms on any excursion. Supports up to 4 door sensors, with an alarm if a door stays open beyond the set time. One hooter can serve multiple loggers. Cable length configurable. 12 V DC adapter, 12 V external hooter. Logs door open/close and excursion events.
Charges replaceable logger batteries so a charged spare is always ready, minimising downtime.
Showing External Hooter with Door Sensor
Key features
Best for: Adding on-site alarms, door monitoring and a charged spare battery.
Specifications
What each accessory does.
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| Specification | External Hooter with Door Sensor | Charging Dock |
|---|---|---|
| Measures | Up to 4 door sensors | — |
| Probe / cable | Configurable cable length | — |
| What it does | Wi-Fi hooter giving instant audible alarms on any excursion. Supports up to 4 door sensors, with an alarm if a door stays open beyond the set time. One hooter can serve multiple loggers. Cable length configurable. 12 V DC adapter, 12 V external hooter. Logs door open/close and excursion events. | Charges replaceable logger batteries so a charged spare is always ready, minimising downtime. |
Applications
Industries where we recommend this series, and what it typically monitors there.
Monitoring
Accessories work alongside the monitoring dashboard, so alarms, door events and reports are in one place.
Compatibility
Works with Prithvi loggers – confirm compatibility for your model with our team.
FAQ
Answers to what buyers ask most about this series.
Up to 4 door sensors, with an alarm if a door stays open beyond the time you set.
Yes. One hooter can serve multiple loggers.
It uses a 12 V DC adapter with a 12 V external hooter. The cable length is configurable.
Add the external hooter. It gives an audible alarm on any excursion, and an alarm if a door stays open beyond the time you set. Our team confirms it works with your logger model when we prepare your quote. See hospital and blood bank monitoring.
Share your requirement and we will send a clear quote.
Related

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SIM-based GSM logger for sites and vehicles without Wi-Fi.
Get Solution
Tell us where it will be used and how many you need. We'll confirm the right variant and send you a clear, itemised quote.