View-tec wireless intercom
frequency range-420-450mhz
working voltage-dc5v
TX power- 0.5w
support wireless distance- 1,000 meters(without any obstacles)
uses in one system-1 to 9999 users extendable
working current- 650ma
standby current-1ma
type of battery-18650
working temperature: -10/+40c
physical dimension:190*105*75mm
1 year warranty