Product Details: 

• Astro 5 GPS Speed Sensor
• Made by Micro-Trak
• Part # 01425 
• Features 1 HZ GPS Receiver 
• Comes Standard with Magnetic Mount Bracket
• GPS Receiver can be Mounted Either Inside or Outside the Vehicle
• Includes an M3 X .5mm Female Insert for Threaded Fastener Mounting 
• 2 Red Status Lights to Indicate Power and Valid GPS