Hand Held Wireless Microphone for the Hisonic HS120B series,HS420 and HS700 PA system
All the VHF wireless microphones used in the HS120B series HS122B,HS122BT,HS420 and HS700 come with different frequencies to avoid possible interference. Each handheld wireless microphone is built with a VHF transmitter. When you order from this page, just select the same number as shown on your system.
The frequency is marked by a number, which is on a red dot sticker put on the system and microphone. Check the numbers that you have on your system, inside the battery compartment or on the side of the system.