The TT-104B is a program timer that comes with 4 outputs and controls 4 different broadcasts. With use of an optional rack-mounting bracket, it can be mounted in an EIA Standard equipment (occupying 1 unit size).

• 4 independent output channels
• Weekly program capacity is 30 steps per channel, and each step can be programmed in 1-minute units.
• A channel assignment switch turns B, C and D outputs into A output.
• Programming can be performed easily and precisely through individual key operation and display.
• Setting the pause mode allows no program output to be delivered.
• Output is a no-voltage make contact that connects for 5 seconds at the programmed time.
• Built-in buzzer audibly warns the user of key operation error.
• Monthly error is ±5 seconds at 25? (77?) of ambient temperature.
• Clock and stored programs can be maintained for approximately 100 hours in the event of power outage.