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| Model | Image | Description |
|---|---|---|
| 603 |  | KR1B, Dual Lever Paddle / Keyer |
| 604 |  | Dual Lever Paddle / Keyer |
| 605 |  | Single Lever Paddle / Keyer |
| 606 |  | Single Lever Paddle / Keyer, Curtis Chip |
| 607 |  | Key, Single Lever Paddle |
| 645 |  | Dual Lever Paddle / Keyer, Matches Omni C & D |
| 670 |  | Single Lever Paddle / Keyer for Century 21 Models 570 & 574 |
| 679 |  | Keyer Board for Century 22 |
| KA20 | | Same as Model KR20 Keyer without the paddles |
| KA40 | | Same as Model KR40 Keyer without the paddles |
| KR1 |  | Paddle mechanism used in KR40 |
| KR1A |  | Paddle mechanism used in KR50 |
| KR2 |  | Single Lever Paddle mechanism used in KR5 |
| KR2A |  | Single Lever Paddle, Cream Color |
| KR5 |  | Single lever paddle / keyer |
| KR5A |  | Single lever paddle / keyer |
| KR6 | | Dual Lever Paddle / Keyer |
| KR20 |  | Dual Lever Paddle / Keyer |
| KR20A |  | Single Lever Keyer / Paddle |
| KR40 |  | Dual Lever Paddle / Keyer |
| KR40A | | Dual Lever Paddle / Keyer |
| KR50 |  | Ultramatic Dual Lever Paddle / Keyer |
| R9109 |  | Limited Edition Ten-Tec / Vibroplex Iambic Paddle |
| R9141 |  | Limited Edition Ten-Tec / Bencher 40th Anniversary Iambic Paddle |