Promaster SystemPRO 300C Owner's Manual page 3

Light Body & Rear Control Panel
(1) AC Power Supply Socket
(2) Safety Fuse
(3) Synch Cord Socket
(4) General power supply on/off switch
(5) Modeling Lamp on/off switch
(6) Power setting for modeling lamp on/off switch
(7) Recharge Ready-Light
(8) Slave Sensor
(9) Handle Grip
(10) Audio signal for recharge ready on/off switch
(11) Lock/Release Bolt for reflector & softbox connector
(12) Test button
(13) Output Power Setting for flash/ modeling lamp
(14) Hand Wheel for angle adjustment
(15) Stand Mount
(16) Stand Mount Bolt
(17) Umbrella Holder
(18) Modeling Lamp
(19) Replaceable Flash Tube
Directions for use
1 Turn on the Light
Turn on the power supply by pressing down the power button
(4). The recharge ready light (7) will turn red light when the
flash has been fully charged.
2 Test Flash
Press the test button (12) to make sure the flash is working.
3 Slave Sensor
You can use the built-in slave sensor to trigger the light.