Houston Radar’s SS300 Doppler sign activation/speed sensor/Doppler Radar is a state of the art milli-power Digital Signal Processing (DSP) based K-band radar for the sign activation and traffic calming markets. It is the premier product in its class available in the world.

* “Not recommended for new designs”

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Small, low power usage OEM K-Band Doppler radar at 054 Watts, 11X lower than our DR500S radar and up to 40X lower than some other industry offerings

300+ feet (90+m) typical pickup range for a compact vehicle

FCC, Industry Canada (IC) pre-approved with CE mark

Fully configurable via RS232 serial port for all settings

Simple rotary switch or thumbwheel input possible to set threshold

Wide input operating range allows solar operation

Advanced ground speed tracking to mount on moving vehicle

Ultra-small open frame and weatherproof enclosure options

Firmware “boot loader” allows for field upgrading of firmware

Two LED Lamp outputs to drive 1.8W LED lamps with dimming

One photo sensor input to sense ambient light to dim LED lamps

100% self-test feature built-in including self power usage

IO expansion board w/ DB9 connector, rotary s/w and isolated high power output available

Note: Pickup range will vary with target, installation and road conditions. Range listed is typical on open road with radar mounted 5 feet above ground.

Specification Recommended Condition
Vcc 6.0V to 18VDC
Icc@12VDC 4.5 mA (0.054 Watts)
Radar RF out 5 mW maximum
Radar fcenter 24.125GHz or 24.200 GHz
Operating °F (°C) -40 (-40) min to 185 (85) max
Pickup Distance 300+ feet (90+ m) in most cases
Beam Angle 38°x45°
Beam Polarization Linear
Lamp 1 & 2 out 135 mA max each up to 60VDC
Lamp dimming 180 Hz PWM from 5 to 100 %
LDR light input 0 to 3.3V input
CE Mark Yes
Dimensions Open frame 1.75Wx1.7Hx0.5D”
(44x42x12 mm)
Boxed 1.9Wx2.1Hx0.9D”
Weight 0.05Kg (0.1 lbs) approx

Pin # Function
1 (Triangle Mark) GND
2 Do not connect
3 Reserved. Do not connect
4 Reserved. Do not connect
5 Reserved. Do not connect
6 Reserved. Do not connect
7 Trigger “open drain” output #1
8 Trigger “open drain” output #2
9 RS232 Transmit from radar
10 RS232 Receive into radar
11 VCC
12 GND

Part No. Description Notes
SS300 IO Board SS300 IO Board – SS300 Radar Input/Output Connector Interface board w/ DB9 connector, speed threshold s/w and sensitivity setting
Stat/Alc PD300 IO Board – PD300/SS300 Radar Input/Output Connector Interface board w/ DB9 connector. No Mosfet or rotary switch.
900-0017 SS300 Open Frame Interface Cable – SS300 open frame interface cable with female Molex connector to female DB9
900-0021 SS300 Weatherproof Interface Cable – SS300 weatherproof interface cable with male Molex connector to DB9
JBX Junction Box
USB-RS-P1 USB power supply and PC COM port serial interface
N/A Additional Cable