Home / Stopwatches / 9 Digit Days Stopwatch

Model CS906

Count down 999 days, down to the second.

A jumbo 9-digit LED stopwatch that counts up or down across days, hours, minutes and seconds — programmable from 1 minute up to 999 days 23 hours 59 minutes. Built for construction sites, events, labs and factories that need a visible countdown to completion.

CS906 — 999 Days Count Down Clock (actual COSY unit)
CS906 — 999 Days Count Down Clock (actual COSY unit)Photo: COSY (customer-supplied)

Specifications

What's under the hood.

DigitsJumbo 6" high-bright red LED
Count range1 minute – 999d 23h 59m
CircuitHigh-accuracy microcontroller-based
Power failure backup9V rechargeable battery, ~6 hours
FrameAluminium, black powder coating
Dimensions55" L × 11.5" H × 1.5" D, ~5 kg
Power input12VDC, ~20W (3A adapter recommended)
AlertContinuous beep at 000:00:00:00
⚠ Caution: Never install a non-rechargeable 9V battery in this clock — this may cause the battery to explode and damage the unit. Use only a chargeable 9V, 300mAh battery.

Operation

Set it once, let it run.

01

Install a 9V 300mAh chargeable battery in the compartment on the back cover, and set Battery to the ON position.

02

Connect the 12V power adapter to the DC socket, and set START/STOP to STOP.

03

Hold RESET for 2+ seconds to zero the display, then use INC/DEC with D+, H+ or M+ to set your countdown start time.

04

Set START/STOP to START to begin the countdown — pause any time by switching back to STOP, then resume from where you left off.

05

At 000:00:00:00 a continuous beep sounds; switch to STOP to silence it. The Display ON/OFF switch can blank the digits to save power while the count continues in the background.

Sizes & pricing

Four digit heights, 2.3" to 10".

Digit HeightModel No.DatasheetIntl. (USD)India (INR)
2.3"CS902PDF$250₹9,500
4"CS904Email us$475₹16,000
6"CS906Email us$950₹28,000
10"CS910Email us$1,200₹45,000

Prices include courier shipping. GST @18% applies to India orders.

Recommended for

Anywhere the clock is the story.

Construction sites

A visible countdown to project completion, kept running through power interruptions.

Events

Countdown to doors-open, race start, or a launch moment, readable from across the venue.

Labs & factories

Track process or cure time in days, with an audible alert at zero.

Sports & fitness centres

Long-duration countdowns for challenges, camps and multi-day events.

Need a different digit count?

We also build 7 and 8-digit day counters.

See the full stopwatch catalogue, or tell us your required range and we'll recommend a model.

Send a Query