UNTESTED!!! As I don’t know about this item

When power up (Power Failure RED LIGHT) showing when pree and hole the ( Manual ON/OFF) the green light showing at the same time as the red light. After some time the red light will turn off sometimes it turns off immediately after the green light is showing not sure why.

INFO ABOUT THE ITEM

Sony PT-79R Program Timer

Programmable timer (1980-81)

Specifications:

Time display: fluorescent tube digital display

Timer type: 24 hours

Timer accuracy: synchronized with line frequency

AC outputs: 4 x 500 watts maximum (inductive load)

Dimensions: 430 x 67 x 300 mm

Year: 1980

Country: Japan

Very rare program timer.

Description:

Weekly timer: With easy-to-read digital time display. Up to four timer programs can be set to turn on an off on any day of the week.

Accurate and easy setting: Depress the four number keys corresponding to the time to be set and the key corresponding to the day. As soon as the SEND key is pressed, the clock will start operating immediately.

A full system if audio components can be controlled remotely: By connecting the optional Amplifier TA-636, Tuner ST-636, Turntable PS-636 and Cassette Deck TC-U60 to this timer, the major functions of the system can be controlled by an infrared tay transmitted from the supplied Remote Control Unit RM-79. Supplied Next Time set display allows confirming the next operation of the time.

Two methods of time display: 12-hour and 24-hour display.

Display brightness selector: the time display can be brightened or dimmed to suit your preference.

Power backup to keep the clock operating during a power failure by means of a built in rechargeable battery.

A second display key allows you to check the time to the exact second

A manual switch allows you to control the power to the connected appliance manually.