1. Two-channel digital display Controller
Model VP-HL-PA4024-2 
Input voltageAC 100-250V 
 Control Channels2
 Input voltage 13.6V- 24V DC 
Maximum load 30W/24V; 44W/24V
Delay to BNC <25us
Trigger frequency  <20KHz
External dimmer200Hz-10KHz PWM

2. Four-channel digital display Controller :

Model VP-HL-PA4024-4 
Input voltageAC 100-250V
 Control Channels4
 Input voltage 13.6V- 24V DC 
Maximum load 30W/24V; 44W/24V
Delay to BNC <25us
Trigger frequency  <20KHz
External dimmer200Hz-10KHz PWM