| Allied Electronics | 70120127 | 1 | | 1 | |
 Digi-Key | 480-2432-ND | 1 | 81 | 1 | 1 @ $27.24, 10 @ $24.59, 25 @ $23.56, 50 @ $22.09 |
| Newark | 04M8388 | 1 | | 1 | |
 Onlinecomponents.com | BZ-2RQ1 | 1 | 99 | 1 | 1 @ $12.34, 25 @ $11.73, 100 @ $11.14, 300 @ $10.51, 500 @ $9.99, 1000 @ $9.03, 2000 @ $8.65 |
 Grainger | 24A049 | 1 | 18 | 1 | 1 @ $19.60 |
 Zoro | G4573493 | 1 | 10 | 1 | 1 @ $23.80 |
| RS Online | 8426633 | 1 | | 1 | |
| 1Source | BZ-2RQ1 | 1 | | 1 | |
| Galco | BZ-2RQ1 | 1 | | 1 | |
| iodParts | BZ-2RQ1 | 50 | 750 | 50 | 50 @ $23.64, 100 @ $22.91, 150 @ $22.17 |
 Carlton Bates Company | 78454916655 | 1 | 43 | 1 | 1 @ $27.63 |
 swatee.com | BZ-2RQ1 | 1 | 18 | 1 | 1 @ $40.45 |
| Raptor Supplies | AB7TGR | 1 | | 1 | |
 TME | BZ-2RQ1 | 1 | 17 | 1 | 1 @ $57.18, 10 @ $42.38, 50 @ $39.82, 100 @ $36.69 |
| AmazonSC | B00KSM2YQS | 1 | | 1 | |
 grainger.ca | WWG24A049 | 1 | -2 | 1 | 1 @ $18.05 |
| sustainablesupply.com | C1174551 | 1 | -2 | 1 | 1 @ $22.63 |
| RS Delivers | 842-6633 | 1 | 19 | 1 | 1 @ $27.34 |
 kempstoncontrols.co.uk | BZ-2RQ1 | 1 | | 1 | 1 @ $7995.76 |
| standardelectricsupply.com | 26728 | 1 | | 1 | 1 @ $6284.00 |
| Newark | 45AJ1692 | 3 | 122 | 3 | 1 @ $43.75, 5 @ $41.23, 10 @ $38.70, 25 @ $35.35, 50 @ $33.16, 100 @ $31.50 |
| Global Industrial | WBB2866175 | 1 | | 1 | |
 Radwell | BZ-2RQ1 | 1 | 1 | 1 | 1 @ $40.00 |
| RS Delivers | 2508590539 | 1 | | 1 | |
 cappusa.com | 810123 | 1 | | 1 | 1 @ $0.00 |
 Galco | BZ-2RQ1-MCRO | 1 | | 1 | 1 @ $0.00 |
| us.rs-online.com | 70120127 | 1 | 9 | 1 | 1 @ $84.37, 3 @ $81.10, 5 @ $77.35, 25 @ $70.56, 50 @ $66.43, 100 @ $61.08 |
| alliedcontrols.com | BZ-2RQ1 | 1 | Factory Order | 1 | 1 @ $103.84 |
| Digi-Key | 1248583 | 1 | 298 | 1 | 1 @ $42.52, 10 @ $37.21, 25 @ $34.02, 50 @ $31.89, 100 @ $30.30, 250 @ $29.23 |
