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Description
HKD REAL TIME CLOCK-DS1307Real Time Clock I2C with 24C32 32K EEPROM with CR2032 Battery Holder (Battery not included) Real Time Clock I2C Overview The DS1307 is a low power, with 56 bytes of non volatile RAM BCD code clock calendar real time clock chip, the address and data transmission through the two wire bidirectional serial bus, the chip can be seconds, minutes, hours and other information , the number of days in each month can be adjusted automatically. And there is a
Real Time Clock -I2C with 24C32-32K EEPROM with CR2032 Battery Holder (Battery not included)
Real Time Clock -I2C
Overview
The DS1307 is a low power, with 56 bytes of non-volatile RAM BCD code clock calendar real-time clock chip, the address and data transmission through the two-wire bidirectional serial bus, the chip can be seconds, minutes, hours and other information , the number of days in each month can be adjusted automatically. And there is a leap year compensation function. AM / PM flag determines clock work 24-hour or 12-hour mode, the chip has a built-in power-sense circuit, brownout detection and battery switching function.
Features
- Module Feature:
- DS1307 I2C real-time clock chip (RTC)
- 24C32 32K I2C EEPROM memory
- Using LIR2032 rechargeable lithium battery (Battery not included) with charging circuit
- Fully charged, it can provide 1 year lifetime
- Compact design, 27x28x8.4mm
- Leads to the a DS1307 clock pin, to provide the clock signal for the MCU
- Can be cascaded to other I2C devices
- Weight : 0.008 kg
- DS1307 Feature:
- Can account seconds, hours, minutes, monthly number of days, months, days of the week count with leap year compensation function. Record the year on line 2100
- 56 bytes of non-volatile RAM
- Two-wire serial interface
- Programmable square-wave output
- Automatic power-down detection and switching circuit
- In battery backup mode, power consumption is less than 500nA
- Weight : 0.008 kg
Downloads
Additional Information
| Device | Clock -I2C |
| Type | Real Time |
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Exchange/Return Notes
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4.8 ★★★★★
Based on 8 reviews
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Product Reviews
★★★★★ 5
No problems after a year and a half
Color: Dogwood & Calming, Size: Medium
Have been regularly buying these for my corgi for about a year and a half. The 2 pack lasts about a month or 2 each time. Pieces break off in small enough pieces that they safely pass through his digestive system. He gnaws each one down to about 1/4 the original size before we take it away and give him a new one. He continues to have regular bowel movements and has a healthy appetite so I can’t imagine any problems arising after so long.
I have tried other alternatives and every other similar chew breaks off in larger pieces and didn’t feel comfortable letting him chew/eat them. I noticed there are a few 1 star reviews saying their dogs got sick off these but after a year and a half I have had 0 issues with this product. I guess it depends on the dog and how big of pieces they are swallowing. My dog ingests pieces about the size of a grain of rice so just pay attention and you should be fine.
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Reviewed in the United States on February 18, 2026
★★★★★ 5
Long lasting and safer alternative to sticks
Color: Dogwood & Calming, Size: Medium
These are great, very durable, and have lasted a very long time. Much safer for my dogs than the random sticks they find in the yard. They do get shorter with chewing eventually, but they don't break off in little chunks like I've seen with some nylon chews, and they don't splinter like wood. Medium size works well for both my 16 lb Cavalier and my 60 lb Pyrenees/Golden mix. They're both moderate-to-aggressive chewers, though size obviously affects how much damage they can do.
I wish you could buy the hemp chew separately because that one is very much a favorite in my house, so after 2 years and 2 purchases, I have barely any left of the remaining hemp chew, but still 2 of the dogwood chews that neither dog is as interested in anymore. I'd love to buy a couple more of just the hemp one.
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Reviewed in the United States on April 30, 2026
★★★★★ 5
Your dog will thank you.
Color: Dogwood & Fresh Breath, Size: Large
My dogs loves to chew on these. They make a small mess but not as bad as other chews. They are food for keeping teeth clean.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Nice chew toy
Color: Dogwood Mushroom, Size: Medium, Color: Dogwood Mushroom, Size: Medium
Super durable and puppy loves it. It was a bit hard for her at first but now at 5 months it’s one of her favorite things to gnaw on! It is heavy for the size but seems to be great quality and has given many hours of chew time with minimal wear.
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Reviewed in the United States on March 12, 2026
★★★★★ 4
Long lasting
Color: Dogwood & Calming, Size: Medium
My dogs love these bones.
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Reviewed in the United States on March 25, 2026