Extension cable 330-C-5M

TECPEL 330-C-5M Mic Extension cable is 5 meters long and is for Sound Level meters DSL-331 and 330. It does not include the sound level meter and Mic. 1. unscrew the knob slightly from the body of the sound level meter. 2. Pull the Mic off from the meter. 3. a small hole on the Mic and a pin guide on the meter. Just put it on gently and screw it back to the sound level meter. This is relatively easy. Optional Extension cable 3 Meters, 5 Meters long available.