# Fridge Door Alarm ## Description A Fridge door Alarm is a simple PCB project designed to detect & inform the status of any refrigeration unit’s door: whether its open or not. It produces a monotonous beeping noise if the fridge door is left open for too long by an accident. It’s common use is in refrigerators, Temperature Controlled Freezers & beverage coolers. ## Project Details - **Owner:** jecstronic - **Created:** 4/12/2022 - **Last Updated:** 4/18/2022 - **Visibility:** Public - **Forks:** 1 ## Key Components ### BZ1 — [254-EMB84Q-RO](https://www.flux.ai/jharwinbarrozo/254-emb84q-ro.md) - Manufacturer Name: Kobitone - Manufacturer Part Number: 254-EMB84Q-RO **Pins:** - - - + ### D1 — [1N4007](https://www.flux.ai/jharwinbarrozo/1n4007.md) - Part Type: Diode - Manufacturer Part Number: 1N4007 - Datasheet URL: https://datasheet.lcsc.com/lcsc/2109061630_YONGYUTAI-1N4007_C2892681.pdf - Manufacturer Name: YONGYUTAI **Pins:** - A - K ### J1 — [TerminalBlock-01x02P-5.00mm](https://www.flux.ai/vasy_skral/terminalblock-01x02p-500mm.md) - Part Type: Connector **Pins:** - P1 - P2 ### LED1 — [LED THT D5.0mm](https://www.flux.ai/jharwinbarrozo/led-tht-d5p0mm.md) - Datasheet URL: https://www.nteinc.com/specs/3000to3099/pdf/nte3025.pdf - Manufacturer Name: NTE Electronics, Inc - Forward Voltage: 1.7V - Manufacturer Part Number: NTE3025 - Part Type: LED **Pins:** - A - K ### U1 — [NE555P](https://www.flux.ai/jecstronic/ne555p.md) - Manufacturer Part Number: NE555P - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fse555 **Pins:** - CONT - DISCH - GND - OUT - RESET - THRES - TRIG - VCC ### U2 — [NE555P](https://www.flux.ai/jecstronic/ne555p.md) - Manufacturer Name: Texas Instruments - Manufacturer Part Number: NE555P - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fse555 - Part Type: Integrated Circuit **Pins:** - CONT - DISCH - GND - OUT - RESET - THRES - TRIG - VCC *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jecstronic/fridge-door-alarm](https://www.flux.ai/jecstronic/fridge-door-alarm).* --- *Generated from [https://www.flux.ai/jecstronic/fridge-door-alarm](https://www.flux.ai/jecstronic/fridge-door-alarm)*