MICROPROCESSOR TIMER

336 steps (including on/off, 2 sleep functions and enable/disable) may be stored in memory. The sleep times may be programmed independently from 1 second to 99'99". In addition, memory is protected against accidental deletion, and can be internally protected. The kit comes complete with housing, keyboard and relays (transformer, not included).

Specifications

• Flat keyboard with key beep and visual LED control
• C-MOS memory for 336 functions (560 without date)
• Memory backup with Ni-Cd batteries, protected memory and clock for several months
• 4 relay outputs: 3A / 240V
• Power supply: 8VAC / 1A or 12VDC / 1A non-regulated
• Dimensions: 242 x 116 x 59mm (9.5" x 4.6" x 2.3")

Extras

Hints

• When due to low mains voltage the timer goes in reset, change ZD1 6V8 by a 5V2 type.

• To eliminate noise problems coming from RY4, put a 100nF capacitor between the points 15 and 16 of IC2.