User's Manual

Houston Radar PD420 User Manual
Page 39 of 46
Appendix B: Optional Breakout Board
Non-Isolated Mosfet version with PWM Brightness Control. May be used with PD420 or
SS300 radars. Light Sensor and brightness control is applicable only to the SS300 radar.
Connecting the load to the High power and trigger outputs:
You may directly connect your high power DC load + & - to J5. The load is activated via fuse F1
when the output is triggered.
You may directly connect a <150mA relay coil or other low power load to the J4 & J6 connectors.
The + load terminals are always wired to VCC. The (-) terminals are connected to GND when a
vehicle is detected and the output triggered. J5 is always triggered at the same time as J6.