Wireless Swivel Head Clamp Meter - SC57

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Wireless Swivel Head Clamp Meter - SC57

The SC57 is the top-of-the-line clamp meter from Fieldpiece Instruments.  Packed with measurements HVACR pros need, the SC57 receives wireless HVACR measurements up to 75' away from the testing point. 

So, you can get HVACR readings, from anywhere on the jobsite, sent directly to the SC57 meter in your hand! 

  • Live temperature split readings while working on the condenser
  • Accurate amps with the blower door firmly closed
  • Real-time vacuum readings from anywhere on the jobsite


  • Wireless Measurements for faster, more accurate readings
  • 180º Swivel Head Clamp to easily view your results at any angle
  • Clamp Flashlight to illuminate wires in dark spaces
  • Bright Blue Backlight stays on for 3 minutes for easy readings
  • Rugged Construction to withstand harsh conditions
  • Automatic Power Off (APO) to preserve your battery life when clamp isn't in use
  • Non-Contact Voltage warning via audio and visual alarms
  • Easy Field Calibration with convenient pot location to quickly calibrate K-type thermocouples
  • True RMS to accurately measure non-sinusoidal wave forms
  • Auto Ranging for quick, accurate readings 
  • Constant Battery Status so you don't run out of batteries in the middle of a job

Competitive Advantages

The SC57 is simply the best HVACR clamp meter on the market.  It provides fast and accurate readings for all the measurements HVACR techs take everyday, plus it's wireless.  It's the only clamp meter on the market that can take true wireless readings.  And with that, techs can do a faster more accurate job.

There are countless ways wireless measurements can help HVACR techs do a better job, but there are two main issues solved by taking measurements wirelessly.

Less time & hassle -- A large part of a techs day is spent walking back and forth between measurement points, and adjustment points.  With the SC57 wireless clamp meter, techs can wirelessly send measurement readings directly to the meter at the adjustment point.  So things like indoor wet bulb can be read while techs are at the condenser making adjustments. 

Better accuracy -- Wireless measurements give HVACR pros a real-time snapshot of the system, so measurements are taken under the exact same conditions.  So temperatures and pressures don't have time to change between different readings.  The real-time measurements allow techs to accurately install, service, and charge systems.  

In addition to being able to expand testing capabilities wirelessly with any Fieldpiece accessory head, the SC57 has these measurements built right in: 

  • Temperature (°C and °F)
  • Duty Cycle (%)
  • Resistance (Ω)
  • Diode testing
  • Amperage (AC)
  • Voltage (DC)
  • Micro-amps (DC)

  • Frequency (Hz)
  • Capacitance (MFD)
  • Continuity
  • Voltage (AC)
  • Clamp Frequency (Hz)
  • Non-contact Voltage (NCV)
  • True RMS


The SC57 comes complete with a wireless transmitter, K-type thermocouple, deluxe silicone test leads, removable probe tips, velcro strap, carrying case, and alligator clips for grounding.

  •     SC57 - Wireless Swivel Head Clamp Meter
  •     ET2W - Wireless Transmitter
  •     ADLS2 - Deluxe Silicone Test Leads
  •     ASA2 - Alligator Clip Lead Extensions
  •     ATB1 - K-type Thermocouple
  •     ANC7 - Large Single Meter Case
  •     Velcro Strap

Recommended Accessories and Replacement Parts

All of the following Fieldpiece Accessory Heads are compatible with the SC57 Swivel Head Clamp Meter:

In Duct Hot-wire Anemometer & Psychrometer Accessory - AAT3

The AAT3 is a hot-wire anemometer and psychrometer combined in one accessory head.  The AAT3 gets into ducts easilty with its 38" telescoping probe for measurements of air velocity, temperatures, and %RH.  It also calculates wet bulb and dew point.   When connected to the HG3 (either directly or through a wireless transmitter) the AAT3 provides data for automatic calculations of target superheat, target evaporator exit temperature, and total CFM tests.


Esitmate CFM quickly and easily using the AAV3 Air Velocity head.  Simply measure your register free area in square feet and multiply by your reading.  Great for quick balancing checks too.

Anemometer - Air Velocity and Temperature Accessory - AAV3

The AAV3 is an anemometer accessory head for use with our modular instruments that measures air velocity and temperature in English or Metric units: Ft/min, M/s, MPH, KM/hr, ºF (degrees Fahrenheit) or ºC (degrees Celsius). Multiply your air velocity by the register’s free area to estimate CFM or diagnose duct blockages and quickly check the airflow balance in a conditioned space. Use with our DL3 Data Logger to track airflow or temperature over time. Features average and real time testing modes.


The ACM3 has a fast electrochemical sensor specific to carbon monoxide or CO. It measures CO in parts per million (0-1000 ppm, 2000 ppm max 5 min. exposure time)

Carbon Monoxide Detector Accessory - ACM3

The ACM3 is a carbon monoxide detector (CO detector) accessory head for use with our modular instruments that measures CO in parts per million (ppm). Its electrochemical sensor is fast enough for walk-around tests. Features and benefits include: Advanced, three-pin sensor that measures 0 to 1000 ppm CO; Calibrate / Zero ACM3 to ambient quickly with the zero calibration pot under the grey rubber strip; Auto Power-Off (APO); Use optional pump (AOXP2) for remote / flue gas testing.

The ADMN2 dual port  manometer measures gas pressure, static pressure and pressure  differential.

Dual-Port Manometer Accessory – ADMN2

The ADMN2 is a portable dual port manometer accessory head for use with our modular multimeters (DMMs) and instruments. Measures gas pressure, static pressure and pressure differential. The ADMN2 includes a zero adjust and the Auto Power-Off (APO) function to conserve battery life. Disable APO for data logging. The ADMN2 measures pressure between -60inWC and 60inWC (inches of water column) and -150.0 to 150.0 mBar. The ADMN2 also measures P1 or P2 pressure readings and calculates the difference between P1 and P2. Take static pressure measurements using the resolution mode of 0.01inWC or 0.01mBar.


The AMN2 manometer is sensitive enough for static pressure readings and a solid performer when reading gas pressure on the manifold.  Comes with 3/16 tubes with brass fittings and 5/16 adapters.

Manometer Accessory – AMN2

The AMN2 is a manometer accessory head for use with our modular multimeters (DMMs) and instruments. Measures gas pressure with a resolution for static pressure measurements. The AMN2 includes a zero adjust and the Auto Power-Off (APO) function to conserve battery life. Disable APO for data logging. The AMN2 measures pressure between -60inWC and 60inWC (inches of water column). Take static pressure measurements using the resolution mode of 0.01inWC.

The AOX2 Combustion Check head gives technicians all of the test parameters they need for everyday combustion testing without all of the costly extras they don't need. Measures % O2 and Flue Temp, Calculates % CO2 for Oil and Gas equipment.

Combustion Check Accessory - AOX2

The AOX2 is combustion check accessory head that measures % O2 (percent oxygen) and flue gas temperature. It calculates % CO2 (percent carbon dioxide) for two fuel types: gas and oil. Technicians use the AOX2 to sample flue gas on serviced or newly installed equipment. It eliminates the costly, extra tests found on full-function combustion analyzers that technicians often don’t use or need. Match your results to specifications on the data plate or in the manufacturer’s manual to quickly tune furnaces, boilers and more.


The AHR4 Digital Sling Psychrometer reads air temperature and %RH (relative humidity) and displays wet bulb and dew point on your meter. Perfect for finding you target superheat.

Digital Sling Psychrometer Accessory - ARH4

The Fieldpiece model ARH4 Digital Sling Psychrometer and Hygrometer Accessory Head measures both relative humidity and ambient air temperature. It calculates dew point and wet bulb. It’s great for calculating target superheat as well as logging %RH, temp, WB or DP over time. The head converts %RH, ambient temperature, dew point temperature, and wet bulb temperature to a voltage at a rate of 1 %RH or degree to 1mVDC and your reading is displayed on your meter. The ARH4 snaps directly onto Fieldpiece stick meters, data logger, electronic handles and adapters.

In Duct Psychrometer Accessory - ARH5

The Fieldpiece model ARH5 In Duct Psychrometer Accessory Head that measures temperatures and %RH in the prime location -- in the duct, near the evaporator. It’s great for calculating target superheat as well as logging %RH, temp, WB or DP over time. The ARH5 snaps directly onto Fieldpiece stick meters, data logger, electronic handles and adapters.  Plus techs can get results wirelessly, like indoor wet bulb while they're at the condenser, when they use this accessory head with a wireless transmitter and wireless enabled Fieldpiece meter.

The ASX14 superehat and subcooling accessory for air conditioning measures line pressure and temperature to deliver realtime superheat and subcooling for charging fixed resrictor and TXV / TEV systems. For use with r-22 and r-410a systems.

Superheat and Subcooling Accessory for Air Conditioning – ASX14

The Fieldpiece Superheat and Subcooling Accessory for Air Conditioning, model ASX14, measures suction line, or low side, line temperature and pressure. It then calculates actual superheat in real time using built in P/T charts. It also measures liquid line, or high side, line temperature and pressure, and calculates actual subcooling. Use it to get actual superheat on R-22 and R-410A fixed orifice systems and actual subcooling on TXV / TEV regulated systems. Use the “T” fitting to charge to actual superheat or subcooling by putting the ASX14 in-line between your refrigerant bottle and the system.


The ATH4 dual temperature head offers excellent temperature compensation for fast accurate measurements of temperature differential and with optional thermocouples, hi-temp and wet bulb readings.

Dual-Temperature Accessory – ATH4

The Fieldpiece Dual-Temperature Accessory, model ATH4, measures two temperatures simultaneously using the included k-type, wrap tab beaded thermocouples. The technology inside the ATH4 provides superior temperature compensation in rapidly changing environments commonly found while performing field service. Use the ATH4 to find Delta T and just about any temperature split you want to measure. Displays T1, T2 and T1-T2 on your Fieldpiece meter, handle or data logger. It is included with the HVAC Guide® System Analyzer to get target superheat and for the Target Evaporator Exit Temperature test. Fieldpiece offers a wide variety of k-type thermocouples for various HVAC specific applications. Use pipe clamp T/Cs with the ATH4 to check for blocked filters. Use wet and dry bulb thermocouples to find target superheat.


The ATIR3 infrared temperature head includes an 8:1 cone of view and a laser sight for quick temperature measurements in english or metric units.

Non-contact Infrared Temperature Accessory with Laser Sight– ATIR3

The Fieldpiece Non-contact Infrared Temperature Accessory with Laser Sight, model ATIR3, collects infrared energy (IR) and converts it to a mVDC signal that is proportional to the temperature being measured. The temperature measured is the average of all the temperatures in the 8:1 cone of viewability. The closer you are to the target, the smaller the area measured. The further away, the larger the area. The digital, non-contact ATIR3 converts the Fieldpiece “Stick” series meter, DL3 data logger, and EHDL1 electronic handle to a one-piece infrared, or IR, thermometer. Use the optional Fieldpiece ADLS2 deluxe silicone test leads or the AHDL1 adapter handle with the ATIR3 for use with DMMs with industry standard jacks.


The AUA2 milliamp and microamp head measures microamps for flame diode tests and 4 to 20 mA for control circuits. Comes with adapter plugs for flame diode testing.

Milliamp & Microamp Accessory – AUA2

The Fieldpiece Milliamps & Microamp Accessory, model AUA2, converts microamps (for flame rectifier diode) and milliamps (for heat anticipators and control circuits) to a mV signal for direct current reading on any meter with mV ranges. For resolution of 0.1 micro/milliamps, use a meter that displays 0.1mV. The AUA2 includes quick connect and mini-plug adapters to convert your "stick" meter, DL3 data logger, and EHDL1 electronic handle to a one-piece flame rectifier diode tester and heat anticipator checker.

The AVG2 vacuum gauge accessory head has a 50 to 2000 micron Hg (microns of mercury) range  with a resolution of 1 micron and LEDs to show an increase, a decrease and a stable vacuum pressure.

Digital Vacuum Gauge Accessory – AVG2

The Fieldpiece Digital Vacuum Gauge Accessory, model AVG2, is a thermistor based digital multimeter accessory that digitally measures a vacuum of 50 to 2000 microns and converts that reading into millivolts DC on your compatible DMM or our electronic handle and data logger. LEDs provide a pump down indicator showing progress from atmospheric pressure. The sensor has been designed to withstand pressures up to 500 psi (3400kPa) so that no damage to the AVG2 will occur if it is exposed to full system pressures.

The AVH1 voltage accessory head is specifically designed for use with our data loggers and our electronic handle.  Standard test leads plug into the top of the head.

Voltage Accessory– AVH1

The Fieldpiece Voltage Accessory, model AVH1, converts volts to millivolts for use with data logger DL3 for direct display and recording of voltage through the meter’s mV scale. Use it with the EHDL1 to record MIN and MAX while freeing up your meter for other tests. Cat III rated. Maximum voltage of 600V AC or DC..




Wireless range:  Up to 75 feet (23m) line of sight
Minimum wireless distance: 
1 foot (30cm)
Wireless frequency:
910MHz to 920MHz (US), 868.1MHz to 868.5MHz (European)
10000 count display with backlight
(OL) or (-OL) is displayed
Measurement rate: 
2 times per second, nominal
Operating environment:
32°F to 122°F (0°C to 50°C) at <70% relative humidity
Storage temperature:
-4°F to 140°F (-20°C to 60°C), 0 to 80% RH (with battery removed)
Stated accuracy @ 73°F±9°F (23°C±5°C), <75%RH
Temperature coefficient: 
0.1 x (specified accuracy) per °C [0°C to 18°C (32°F to 64°F), 28°C to 50° C(82°F to 122°F)]
APO (Auto Power Off): 
Approx. 30 minutes
Single standard 9-volt battery, NEDA 1604, JIS 006P, IEC 6F22
Battery life:
100 hours typical alkaline
Low battery indication:
Battery icon will be empty (). "batt" displays along with a continuous beep when the battery voltage drops below the operating level. Meter shuts off in 5 seconds.
258.3mm(H) x 71.2mm(W) x 42.7mm(D)
Approx. 278g including battery
6562 feet (2000m)
Overload protection: 
600VDC or 600VAC rms unless otherwise stated in the individual test sections.
Test leads:
Shall use UL listed test leads complied UL61010-031 rated CATIII 600V or above.