Wireless Professional Gen 2 AC Current Meter Sensors - 20 Amp

  • Part #:RFP-0253-2
  • Weight:105g
  • Availability: Inquire

Price: $173.25
Price: $233.89


Scigiene’s Wireless Gen 2 AC Current Meters measure the RMS current of an alternating current (AC) system using a current transformer (CT) that wraps around the "hot" wire of a two wire (hot, common, ground (optional)) power system. The sensor reports Minimum RMS current, maximum RMS current, average RMS current, and amp hours.  150 Amp available (see related products below).  Scigiene's wireless sensors are ideal for pharmaceutical, medical and other high tech applications where loss of data is unacceptable.  These also have an amazing range of over 1000 ft. with 10 year battery life and can be remotely upgraded via network connections. These are truly the most advanced wireless sensors available.


  • Wireless range of 1,200+ feet through 12+ walls *
  • Frequency-Hopping Spread Spectrum (FHSS)
  • Improved interference immunity - Improved power management for longer battery life **
  • Encrypt-RF® Security (Diffie-Hellman Key Exchange + AES-128 CBC for sensor data messages)
  • All Gen 2 sensors now have up to 3200 readings: 10-minute heartbeats = 22 days, 2-hour heartbeats = 266 days
  • Over-the-air updates (future proof)

* Actual range may vary depending on environment

** Battery life is determined by sensor reporting frequency and other variables


0-20 Amp Current Transformer

Absolute max CT current

50 A RMS

Maximum accurate CT current

20 A RMS

Frequency range

50-100 Hz


+/- 2% FS @ 2 to 20 A RMS, +/- .07 A RMS @ < 2 A RMS1

Calibrated accuracy with appropriate offset

+/- (1% + .035 A RMS)1

Offset limits

-1.27 to + 1.27 A RMS (default set to +0.1 A RMS)2

Measurement resolution

~0.1 A RMS

Typical Deadband

~0.1 A RMS2


2.10 ounces (CT only)

Lead Length

0.9 m (3 ft)

Gen 2  Wireless

Data logging

Sensor logs 2000 to 4000 readings if gateway connection is lost (non-volatile flash, persists through power cycling): 10-minute Heartbeats = ~22 days - 2-hour Heartbeats = ~266 days

Wireless protocol

Gen 2 Proprietary Frequency-Hopping Spread Spectrum (FHSS)

Wireless transmission power (EIRP)

50 mW (900MHz), 25 mW (868 MHz), 10 mW (433 MHz)

Wireless range

2,000+ ft. through 18+ walls with the Gen 2  XL® Gateway


Encrypt-RF ® (256-bit key exchange and AES-128 CTR)


Battery voltage range

2.0 to 3.8 VDC

Operating altitude (non-pressurized environments)

-15.2 to 1,982 m (-50 to 6,500 ft)3

Storage altitude (non-pressurized environments)

-15.2 to 3,048 m (-50 to 10,000 ft)3

Operating humidity

5 to 85% RH (non-condensing)


900 MHz sensors: FCC ID: ZTL-G2SC1 and IC: 9794A-G2SC1.

1. CTs are inherently less accurate at or below 10% of max range. For best calibration results calibrate at a current between 30% and 90% of max accurate range.

2. Because of a diode inherent to the hardware, the sensor is incapable of reading between 0 and the deadband value. This diode also creates an offset. To account for this, the firmware uses offset compensation. 3. Operating and storage altitude without DC power supply is -30.48 to 9144 m (-100 to 30000 ft).

Technical Information

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