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Around 85 dB at 10 cm — loud enough for room-level alarms
The Teensy 4
Product Standalone AVR ISP Programmer Brand Circuitrocks Category Bench accessory Power supply power adapter or external expansion pin power supply (not support ISP download interface power supply) Pinout & power notes
Plug it into your Arduino and then run the matching mobile app on your tablet or phone
This is a 4-port USB hub for Raspberry Pi Zero
Jumper Cap 2.54mm PCB Shunts 10PCS skeleton case Around 85 dB at 10Jumper caps (shunts) for 2. 54mm header pins, 10 per pack. Slip one over two neighboring pins to close a connection, no wiring needed. Standard way to set config jumpers on boards, dev kits, and drives. Reusable and hold in place under vibration. Specs Pitch 2. 54mm Material Plastic shell, metal contacts Fits Standard 2. 54mm header pins Quantity 10 pcs
