| 型号 | 厂商 | 描述 |
| 4av19f | Honeywell Sensing and Control | SENSOR MAGN HALL EFFECT VANE |
| 4av20f-t1 | Honeywell Sensing and Control | SENSOR MAGN HALL EFFECT VANE |
| 4av20f-t2 | Honeywell Sensing and Control | SENSOR MAGN HALL EFFECT VANE |
| 4b1aan | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED AMBER |
| 4b1abn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED BLUE |
| 4b1agn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED GREEN |
| 4b1arn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED RED |
| 4b1awn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED WHITE |
| 4b1ayn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED YELLOW |
| 4b2aan | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED AMBER |
| 4b2abl | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED BLUE |
| 4b2abn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED BLUE |
| 4b2agl | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED GREEN |
| 4b2agn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED GREEN |
| 4b2agu | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED AMBER |
| 4b2arl | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED RED |
| 4b2arn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED RED |
| 4b2aru | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED RED |
| 4b2awl | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED WHITE |
| 4b2awn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED WHITE |
| 4b2awu | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED WHITE |
| 4b2ayl | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED YELLOW |
| 4b2ayn | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED YELLOW |
| 4b2ayu | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED YELLOW |
| 4b2byl | Honeywell Sensing and Control | 4 BUTTON PROJECTED BLUE |
| 4b2eyu | Honeywell Sensing and Control | 4 BUTTON TRANSMITTED BLUE |
| 4b88pa51h01800 | Laird Technologies EMI | GASKET FABRIC/FOAM 8X2.3MM BELL |
| 4bqf09 large | Easy Braid Co. | 9" 4MIL BLUE POWDER FREE NITRILE |
| 4bs3 | Honeywell Sensing and Control | SWIT ADJ PLUNGER SPDT 15A SOLDER |
| 4c11b11 | Honeywell Sensing and Control | 4 SW BEZEL LONG BRACKET BLACK |
| 4c13pa51h01800 | Laird Technologies EMI | GASKET FABRIC/FOAM 5X2MM D-SHAPE |
| 4c7/120v | Chicago Miniature Lighting, LLC | LAMP INCAND C-7 CANDLBRA SCRW |
| 4c8697 | Switchcraft Inc. | CABLE 760K TO R/A L712A 18AWG 6" |
| 4circle-5-gm110 | 3M (TC) | GRIP MATERIAL 4" CIR BLK 5/PK |
| 4circle-5-gm400 | 3M (TC) | GRIP MATERIAL 4" CIR BLK 5/PK |
| 4d1210 | Crydom Co. | RELAY SSR AC-OUT 120VAC 10A PNL |
| 4d1225 | Crydom Co. | RELAY SSR AC-OUT 120VAC 25A PNL |
| 4d1240 | Crydom Co. | RELAY SSR AC-OUT 120VAC 40A PNL |
| 4d2410 | Crydom Co. | RELAY SSR AC-OUT 280VAC 10A PNL |
| 4d2425 | Crydom Co. | RELAY SSR AC-OUT 280VAC 25A PNL |
| 4d2440 | Crydom Co. | RELAY SSR AC-OUT 280VAC 40A PNL |
| 4d2450 | Crydom Co. | RELAY SSR AC-OUT 280VAC 50A PNL |
| 4edl1s | TE Connectivity | MODULE POWER ENTRY FLANGE SW 4A |
| 4edl1sc | TE Connectivity | MODULE POWER ENTRY SNAP IN SW 4A |
| 4edl1scm | TE Connectivity | MODULE POWER ENTRY SNAP IN SW 4A |
| 4edl1sm | TE Connectivity | MODULE POWER ENTRY FLANGE SW 4A |
| 4edl4 | TE Connectivity | MODULE POWER ENTRY FLANGE 4A |
| 4edl4c | TE Connectivity | MODULE POWER ENTRY SNAP IN 4A |
| 4edl4cm | TE Connectivity | MODULE POWER ENTRY SNAP IN 4A |
| 4edl4m | TE Connectivity | MODULE POWER ENTRY FLANGE 4A |