MODEL: RF816
RF Output Level: 66 +_ 3.5dB uV
RF Output Channels: 3/4CH
Audio Input Impedance: 13 +_ 3K ohm
Input: A: 3 RCA A/V Input
TV to ANT Insertion: -2dB
Input B: 75 ohm Antenna
Input Power Source: AC 90V-240V
Measure:57*36.5*30MM
Package:100pcs/ctn
Gross weight:16KG
Net weight:15KG

WHAT IS AN RF MODULATOR?
It is an interface that converts audio and video signals to a normal VHF TV signal. This product converts audio and video signals from a video output source into VHS TV signals that can be viewed on any television set.