| Siemens | Illuminated | SIRIUS ACT 3SU10 | 22mm | Siemens | - | Red | Twist Release | Yes | Mushroom | Plastic | IP66, IP67, IP69(IP69K) | - | 40mm | - | Extended product life, Low carbon manufacture | - |
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| Schneider Electric | - | ZB4 | 22mm | Schneider Electric | - | - | Twist Release | Yes | - | - | - | - | - | - | - | Green Premium |
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| Schmersal | - | NDR | 22mm | Schmersal | - | - | Pull Release | - | Mushroom | ABS | IP67, IP69K | - | - | - | - | - |
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| Schneider Electric | - | Harmony XB4 | 22mm | Schneider Electric | - | Red | Pull Release | Yes | Mushroom | Plastic | IP66, IP67, IP69(IP69K) | - | - | - | - | Green Premium |
|
| Schmersal | - | NDR | 22mm | Schmersal | - | - | Pull Release | - | Mushroom | ABS | IP67, IP69K | - | - | - | - | - |
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| Schneider Electric | - | ZB5 | 22mm | Schneider Electric | - | - | Pull Release | Yes | - | Plastic | - | - | - | - | - | Green Premium |
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| Siemens | - | SIRIUS ACT 3SU10 | 22mm | Siemens | - | - | Key Release | Yes | Mushroom | Plastic | - | - | - | - | Extended product life, Low carbon manufacture | - |
|
| Siemens | - | SIRIUS ACT 3SU10 | 22mm | Siemens | - | - | Pull Release | Yes | Mushroom | Metal | - | - | - | - | Extended product life, Low carbon manufacture | - |
|
| Schneider Electric | - | Harmony XB4 | 22mm | Schneider Electric | - | - | Key Release | Yes | Mushroom | Plastic | - | - | - | - | - | Green Premium |
|
| Schneider Electric | - | ZB4 | 22mm | Schneider Electric | - | - | Pull Release | Yes | Mushroom | Metal | - | - | - | - | - | Green Premium |
|
HK$655.805 Each (In a Pack of 42) | Schneider Electric | - | ZB4 | 22mm | Schneider Electric | - | - | Twist Release | Yes | Mushroom | - | - | - | - | - | - | Green Premium |
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| Siemens | - | SIRIUS ACT 3SU10 | 22mm | Siemens | - | - | Twist Release | Yes | Mushroom | Plastic | - | - | - | - | Extended product life, Low carbon manufacture | - |
|
| | - | - | - | RS PRO | Emergency Stop Push Button Head | - | Twist Release | - | - | Plastic | IP65 | - | 40mm | - | - | - |
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| Siemens | - | SIRIUS ACT 3SU10 | 22mm | Siemens | - | Red | Key Release | Yes | Mushroom | Plastic | IP66, IP67, IP69, IP69K | - | 40mm | - | Extended product life, Low carbon manufacture | - |
|
| Idec | Illuminated | HW | 22mm | Idec | - | - | Key Release | - | Mushroom | - | IP20, IP65 | - | - | - | - | - |
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| Schneider Electric | - | Harmony XB4 | 22mm | Schneider Electric | - | - | Twist Release | Yes | Mushroom | Plastic | - | - | - | - | - | Green Premium |
|
| Schneider Electric | Illuminated | ZB5 | 22mm | Schneider Electric | - | - | Twist Release | Yes | - | Plastic | - | - | - | - | - | Green Premium |
|
| Schneider Electric | - | Harmony XALK | - | Schneider Electric | Emergency Stop Push Button Head | Red | Push-Pull/Twist Release | Yes | Mushroom | - | - | - | 40mm | - | - | Green Premium |
|
| Siemens | - | SIRIUS ACT 3SU10 | 22mm | Siemens | - | - | Key Release | Yes | Mushroom | Metal | IP66, IP67, IP69 | - | - | - | Extended product life, Low carbon manufacture | - |
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| Omron | Illuminated | A22E | - | Omron | - | - | Twist Release | - | - | Plastic | IP65 | - | - | - | - | - |
