FDV0220-12
Wireless DC Voltage Detector
The Wireless DC Voltage Detector from Fidar Electronics reports whether a DC circuit up to 60 V is energised and raises the alarm the moment it is not. It links over a LoRa radio with no cabling at all.
Detects DC voltage presence up to 60 V
Immediate supply-loss alert with a timestamp
Covers 12, 24 and 48 V industrial supplies
LoRa radio link up to 1 km line of sight
AES-128 encrypted payloads
Pairs with the FWL1600-01 LoRa card
No cabling; pairing takes seconds
Low-battery warning per node
A DC voltage detector reports whether a DC circuit up to 60 V is energised. On −48 V telecom sites, 24 V control panels and battery systems a supply loss is usually silent: nobody notices until a service drops, and by then nobody knows when it went. This detector raises the alarm at the moment it happens and records exactly when.
Key features
Detects DC voltage presence up to 60 V
Immediate supply-loss alert with a timestamp
Covers 12, 24 and 48 V industrial supplies
LoRa radio link up to 1 km line of sight
AES-128 encrypted payloads
Pairs with the FWL1600-01 LoRa card
No cabling; pairing takes seconds
Low-battery warning per node
Connectivity
LoRa link up to 1 km with AES-128 encryption
Quick pairing with the FWL1600-01 receiver card
Sensor-fault and low-battery warnings before the cell dies
Where it is used
−48 V supply monitoring at telecom sites and BTS towers
Proving 24 V control panels are powered
Power-supply and battery-charger output monitoring
Supply-loss alerts for instrumentation and PLCs
DC circuits in solar installations
Supply loss on security and fire-alarm systems
Installation
Wire the input in parallel with the monitored circuit and observe polarity.




