How to programme RT21?
Retevis RT21 is a hot selling model, elegant, economical price, with scramber function to make your conversation more confidential. How to programme RT21 when you get a new radio at hand?
programme RT21
Retevis RT21 is a hot selling model, elegant, economical price, with scramber function to make your conversation more confidential. How to programme RT21 when you get a new radio at hand?