| PartNumber | RFD22121 | RFD22122 | RFD22123 |
| Description | Interface Development Tools Rfduino USB Shield | Other Development Tools Rfduino RGB Shield | Other Development Tools Rfduino Servo Shield |
| Manufacturer | RF Digital | RF Digital | RF Digital |
| Product Category | Interface Development Tools | Other Development Tools | Other Development Tools |
| RoHS | Y | Y | Y |
| Product | Shields | Shields | Shields |
| Type | USB | RGB LED | Servo Shield |
| Tool Is For Evaluation Of | FT231XQ-R | - | - |
| Packaging | Bulk | - | - |
| Description/Function | USB programming shield | 2 button inputs with 10k resistor pull downs and it also has an RGB LED with series LEDs | Drive up to 4 servos and has a dual supply input |
| Dimensions | 28.96 mm x 22.86 mm x 18.95 mm | - | - |
| Brand | RF Digital Wireless | RF Digital Wireless | RF Digital Wireless |
| Interface Type | USB | - | - |
| For Use With | RFD22102, RFD22301 | RFduino | RFduino |
| Operating Supply Voltage | 3.3 V | - | - |
| Product Type | Interface Development Tools | Other Development Tools | Other Development Tools |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Development Tools | Development Tools | Development Tools |
| Unit Weight | 1.099999 oz | 1.171096 oz | 1.099999 oz |