Increase System Availability

Fast detection and correction of system faults ensures that radio channels are available when first responders need them. RF power measurements at base station and combiner outputs pinpoint faulty transmitters or weather-damaged antennas. Infrastructure monitoring keeps support systems on-line.

Track Base Station Performance

Archer’s unique Base Station Monitoring feature lets you group forward and reflected power measurements with associated keying signals for accurate power monitoring and alarm generation. Or let Archer calculate the keying interval based on forward power thresholds.

Reduce Travel Time

Accurate knowledge of site conditions means you will be prepared with the right tools and equipment to restore operation quickly without costly repeat visits.

Meter Inputs: 16

Meter Input Range:

-10 to +10VDC

Meter Alarm Thresholds:

Low Alarms: Critical and Warning

High Alarms: Critical and Warning

Status Inputs: 16

Can be designated as PTT inputs to control forward and reflected power measurement.

Status Input Range:

0 to +28VDC or switch closure

<.5 VDC = ON; >2.1VDC = OFF

Base Station Monitoring:

Group up to 8 sets of forward and  reflected power measurements with associated keying signals.

Synthesized PTT can be used if an external qualifying signal is not available.

Relay Outputs: 8

Relay Contacts:

Form C Momentary or Latching Max 5A, 240VAC

Email and SMS Alerts:

User selectable per status input and meter input;

10 email lists of up to 20 email addresses each

User Interfaces:

Web interface for PCs and tablets;

Mobile web interface for smartphones;

Optional AutoPilot for customized graphical control, alarm management, data logging, report generation and PTT Flip-book analysis.

Rear Panel Connections:

8 Relay Outputs

16 Status Inputs

16 Meter Inputs

RJ-45: Ethernet

IEC: Power

Power Requirements:

100 to 240VAC, 47–63Hz, 1A; Power entry module with standard, grounded power cord supplied; 1A fuse protection

Operating Environment:

0° to 40° C

5 to 85% RH


1.75" (4.45 cm) H 19" (48.26 cm) W 12" (30.48 cm) D



The TEMP-INDOOR Sensor is a general-purpose, digital, indoor temperature sensor tailored for monitoring ambient temperatures within a room or in an equipment rack. Temperature accuracy: ±0.5° C from -10° C to 85° C. Cables are not supplied with this sensor — order 25’ RJ-12 cable, part number SENSOR CABLE.


The BTU-4D Burk Digital Temperature Unit connects up to four digital temperature sensors to an ARC Solo remote control or to a Plus-X input device in an ARC Plus system. Sensor cables up to 1000 feet long are supported without measurement degradation. The unit also provides a low voltage output sample that tracks linearly with the AC line voltage.

Each temperature output supplies 10mV per degree Fahrenheit or Celsius, based on a jumper setting on the BTU-4D/BTU-4D-I.

The BTU-4D/BTU-4D-I  is supplied with:

  • One 120 V AC power adapter for BTU-4D or a 220V AC power adapter for BTU-4D-I  
  • One TEMP-OUTDOOR sensor for either Fahrenheit or Celsius temperature measurement 
  • One 6‐terminal Phoenix-style plug for connection to monitoring equipment 

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The TEMP-WALLMOUNT Sensor is housed in a 2 5/8” x 5” enclosure with air vents to facilitate sensing of the environment. Temperature accuracy: ±0.5° C from -10° C to 85° C. A 14’ cable is provided with an RJ-12 connector on one end. The TEMP-INDOOR has a large, easy to connect barrier strip that accommodates flat or Phillips type screwdrivers

AC Current Sensor

Part #: 910-093-001

Combined Transformer and Signal Conditioner 

The AC Current Sensor combines a transformer and a signal conditioner into one package. The AC Current Sensor has a selectable input range and an industry standard 0-5VDC output. The AC Current Sensor is designed for application on "linear" or sinusoidal AC loads and is housed in a solid-core case.

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The TEMP-OUTDOOR digital outdoor temperature sensor is included with the BTU‐4D/BTU-4D-I systems, and is intended for general purpose monitoring of equipment or ambient temperatures. Temperature accuracy: ±0.5° C from -10° C to 85° C. The TEMP-OUTDOOR sensor is attached to 25’ of cable with an RJ-12 connector on the end. The sensor has a mounting ring and gasket to accommodate #6 or #8 hardware. The sensing elements are sealed for added protection from dirt and moisture.

Tower Light Monitor

Part #: TLM

Monitor Steady or Flashing Beacon Lamps

The TLM is a universal lamp alarm relay designed to sense the failure of flashing or steady incandescent beacon lamps or steady side lights. The toroidal current sensor provides islolation and allows monitoring of more than one line at a time. The TLM energizes when one or more lamps fail. It will monitor the operation of up to four side lights or four beacon lamps.

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Line Voltage Sensor

Part #: LVS

Monitor AC Power Circuits

Each LVS monitors a single phase AC power circuit and provides a low-voltage DC output sample that tracks linearly with the AC input voltage. Additional LVS units can be added to monitor multi-phase AC power systems.

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Key Features

  • Respond fast to equipment failures.
  • Capture RF drop-outs and intermittent faults.
  • Monitor RF performance, power distribution, environmental / HVAC, security, networking and other site equipment in real time.
  • Remotely activate backup systems.