| Newark | 41X9711 | 1 | | 1 | |
| Newark | 67J3993 | 1 | 6 | 1 | 1 @ $36.06, 5 @ $33.31, 10 @ $30.89, 25 @ $28.46, 50 @ $26.68, 100 @ $25.23, 250 @ $22.97 |
| Airline Hydraulics | OMRON XS2F-D421-D80-F | 1 | 221 | 1 | 1 @ $19.48 |
 kempstoncontrols.co.uk | XS2F-D421-D80-F | 1 | | 1 | 1 @ $15.88 |
 Component Electronics | 299-6355 | 1 | 2 | 1 | 1 @ $63.46, 50 @ $57.12, 100 @ $47.60, 500 @ $41.25 |
| Waldom | OMRON ELECTRONICS XS2F-D421-D80-F | 1 | | 1 | |
| Master Electronics | XS2FD421D80F | 1 | 1 | 1 | 1 @ $25.45, 2 @ $24.01 |
 Digi-Key | 1842961 | 1 | | 1 | |
| us.rs-online.com | 71562437 | 5 | | 5 | 5 @ $19.22, 10 @ $18.84, 20 @ $18.46, 50 @ $17.88, 100 @ $17.69 |
| us.rs-online.com | 70418133 | 1 | 8 | 1 | 1 @ $26.23, 5 @ $25.05, 10 @ $24.53, 25 @ $24.00, 50 @ $23.48 |
| Allied Electronics | 71562437 | 1 | | 1 | |
| Allied Electronics | 70418133 | 1 | | 1 | |
| RS Online | 8525500 | 1 | | 1 | |
 BDI Express | XS2F-D421-D80-F | 1 | | 1 | |
| Digi-Key | XS2F-D421-D80-F-ND | 1 | | 5 | |
| Hotenda | H42204 | 1 | | 1 | |
 Onlinecomponents.com | XS2FD421D80F | 1 | 4 | 1 | 1 @ $22.85, 5 @ $20.77, 10 @ $16.80, 25 @ $16.09, 50 @ $15.44, 100 @ $15.03, 250 @ $14.64 |
 Radwell | XS2FD421D80F | 1 | -2 | 1 | 1 @ $20.09 |