Sixteen Solid State 2A/24V Relays 8-Layer Stackable HAT for Raspberry Pi [Discontinued] Brand_4tronix This is RFID/RFID Smart Ring

This is RFID/RFID Smart Ring with an 21mm Inner Diameter

USB Type-C Connector

Vertically-mounted micro:bit

Support maximum discharge current: 600mA (LDO-3

1x watch strap

Sixteen Solid State 2A/24V Relays 8-Layer Stackable HAT for Raspberry Pi [Discontinued] Brand_4tronix This is RFID/RFID Smart RingThis is a copycat of our 16 Relays HAT, for Raspberry Pi with one significant difference: Solid State instead of mechanical relays. While mechanical relays are very reliable and have close to zero ohms resistance on contacts, they have a limitation in the number of lifetime cycles. The relays we use on the original 16 Relay HAT have a Mechanical Life of 1,000,000 operations. While this might be OK if relays are not triggered too often, what if your