FDV0220-11
Wireless AC Voltage Detector
The Wireless AC Voltage Detector from Fidar Electronics reports whether an AC line up to 220 V is live and timestamps every loss and restore. It links over a LoRa radio with no cabling at all.
Detects AC voltage presence up to 220 V
Immediate power-failure alert with a timestamp
A definite two-state answer, no value to interpret
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
An AC voltage detector reports whether a line is live. Unlike a level sensor that returns a number, it gives a definite two-state answer, which is exactly what the job needs: mains-failure alerts, proving a transfer to generator or UPS, and confirming that critical circuits are energised. Every transition is timestamped, so the outage duration stays in the record instead of relying on someone's memory.
Key features
Detects AC voltage presence up to 220 V
Immediate power-failure alert with a timestamp
A definite two-state answer, no value to interpret
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
Mains-failure alerts at remote sites and stations
Proving load transfer to a generator or UPS
Confirming critical circuits and emergency lighting are live
Feeder status on a distribution board
Telecom sites, BTS towers and equipment rooms
Logging outage count and duration for maintenance reports
Installation
Wire the input in parallel with the monitored line; installation must be carried out by a qualified electrician under low-voltage safety rules.
