
to leave the gun, bounce off an object, and return is used to determine a vehicle’s 
distance and speed. 
 
 
CONTROLS AND FUNCTIONS 
Connect the remote radar to the display unit. Turn on the display unit with 12V 
power cord. Press the power button to turn on the display unit. Once it receives the 
radar signal, the display indicates the radar band with beep sound. 
 
 
INSTALLATION 
The K40 uses a highly sensitive horn-type antenna to receive radar signals. Its 
sensitivity and range depend on the method of installation the direction of the 
antenna in relation to the signal source. The inherent nature of radar waves makes 
them reflect off metallic surfaces. This is why these waves are so useful for 
measuring the speed of a vehicle. 
 
CARE AND MAINTENANCE 
 
The K40 is designed to give you years of trouble-free service. There are no user-
serviceable parts inside, and no maintenance is required. To keep your detector in 
new condition, do not expose the unit to moisture. Rain, dew, road splash, or other 
liquids can damage the internal components and reduce sensitivity of the K40. 
 
SPECIFICATIONS 
 
General 
-Dimensions: 85.00(D) x 80.00(W) x 40.00(H)mm 
-Weight: 115g 
-Power requirement: 12V DC 
-Temperature Range –10 to 75 degree(Operating) 
-Detector Type: Pulse Width Discriminator