Wireless AC Current Sensor

An AC current sensor continuously measures the RMS current flowing in a line and hands it to your monitoring system for logging, trending and alarms. It reads 0–5 A directly, and with a current transformer the same sensor covers feeders of tens or hundreds of amps — the CT ratio is applied in software so the reading comes back in the line's real amps. Current is the most telling health signal an electrical load has: its trend shows a motor's loading, whether a machine is actually running, and the onset of mechanical wear well before it stops the line.

Key features

• Measures RMS alternating current, 0 to 5 A

• Extendable to higher currents with a CT

• Fast response to load changes and current swings

• 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

• Motor and pump load monitoring, catching overload before burnout

• Consumption measurement on distribution boards and feeders

• Proving a machine is running from the current it draws

• Server-room, UPS and backup-circuit load monitoring

• Energy management and per-line consumption breakdown

• Street-lighting circuits and pumping stations

Installation

Mount the sensor on the panel wall or rail and keep the signal cable away from power conductors so induced noise does not disturb the reading.