Stalker Stationary Speed Sensor

General Information

Whether your OEM application requires a Traffic Speed Sensor (moving or stationary), a Stationary Speed Sensor, a Speedometer Speed Sensor, or a Sports Speed Sensor, the Speed Sensor is the ideal Doppler Radar solution for you.

The Speed Sensor is a complete Doppler Radar in a small, rugged, waterproof, cast-aluminum housing. Just supply 9-16 VDC and it will produce serial speed data configured to your application.

The Speed Sensor has the range and performance of the legendary Traffic Radar products. Your application might not require our 2-mile range, but it is there if you need it.

Technical Specifications

Operating Frequency : 34.7 GHz (Ka-Band)
Stability : +/-100 MHz
Communication Interface : RS-232 or RS-485 available as separate models
Power Requirements

: Voltage: 9-16 VDC for SN ST6560 and below
9-24 VDC for SN ST6561 and above

Current: (at 12 VDC nominal)
Transmitter on: 370 mA
Transmitter off: 100 mA

Environmental : Operating: -22° F (-30° C) to +158° F (+70° C) ,
90% relative humidity,
Non-operating: -40° F (-40° C) to +185° F (+85° C)
Mechanical : Weight:  1.15 lb. (0.52 kg)
Diameter:  2.6 in. (6.7 cm)
Length: 4.7 in. (11.8 cm)
Case Material: Aluminum Die Cast
Accuracy : +/- 0.3% - Speeds are rounded down to the nearest unit or tenths of a unit depending on the unit resolution setting
Audio Output : A 3.3 Vpp pulse-width modulated (PWM) audio output signal is provided - must be filtered and amplified for best audio quality.
Auto Self-Test : Performed every 10 minutes while transmitting
Speed Range : Stationary low speed threshold configurable:
1 MPH to 200 MPH (1.6 to 321 KM/H)
12 MPH to 200 MPH (19 to 321 KM/H)


- Speed warning signs; traffic studies
- rail crossing safety
- rail yard operations
- water velocity measurement (flood control, river management)
- tank level systems
- paper production speed measurement
- lava flow measurement
- warehouse safety
- school zone monitoring
- ship docking operations
- industrial applications
- manufacturing process control
- international border monitoring
- measuring face velocity
- drug/contraband interdiction
- base/plant entrance gate security
- toll booth speed monitoring