Magnetic contacts compared
Pick two or three magnetic contacts and see the differences side by side. Every figure comes from the manufacturer’s official datasheet, with a link so you can check it.
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| Feature | Ajax DoorProtect Jewellerdatasheet | Ajax DoorProtect Plus Jewellerdatasheet | Dahua DHI-ARD323-W2(868)datasheet | Inim Air2-MC300datasheet | Paradox DCT6Mdatasheet | Risco RWX78Mdatasheet | Vanderbilt MK-4700datasheet |
|---|---|---|---|---|---|---|---|
| Connection | wireless | wireless | wireless | wireless | wireless | wireless | wired |
| Mounting | Not stated in the datasheet | Not stated in the datasheet | bracket | Not stated in the datasheet | recessed | bracket with two screws | surface mount |
| EN 50131 security grade | 2 | 2 | 2 | 2 | 2 | 2 | 3 |
| Environmental class | II | II | II | II | II | II | II |
| Operating gap (mm) | up to 10 (small magnet), up to 20 (large magnet) | Not stated in the datasheet | under 40 (non-metal doors) | Not stated in the datasheet | close 20, open 23 | 12 to 29 depending on axis and material | Not stated in the datasheet |
| Tamper protection | removal from surface and bracket | removal from surface and bracket | tamper fitted | anti-removal, anti-opening, magnetic anti-tamper | Not stated in the datasheet | tamper fitted | NC tamper contact |
| Contacts and inputs | input for a wired NC detector | input for a wired NC detector; shock and tilt sensors | 1 dry contact input | 2 programmable inputs/outputs | wired input for a second zone | optional inputs with a dedicated bracket | alarm + NC tamper, max 500 mA / 40 V DC |
| Power | 1 × CR123A | 1 × CR123A | 1 × CR123A | 1 × AA alkaline 1.5 V | 1 × ER10450 (lithium) | 1 × CR2450 (lithium) | Not stated in the datasheet |
| Battery life | up to 7 years | up to 5 years | 4 years (external input NO), 2 years (NC or pulse) | 4 years (estimated) | 6+ years in normal use | 3 years typical | Not stated in the datasheet |
| Operating temperature | -10 to 40 °C | -10 to 40 °C | -10 to 55 °C | -10 to 40 °C | -30 to 50 °C | -10 to 55 °C | -40 to 70 °C |
| Dimensions (mm) | contact 90 × 20 × 20; small magnet 55 × 11 × 6 | Ø 20 × 90 | 100.2 × 20.8 × 20.3 (L × W × H) | contact 26 × 108 × 26.5; magnet 13 × 26 × 13.5 | 21 × 73 × 21 | contact 65.5 × 30.5 × 10.5; magnet 65.5 × 10 × 10.5 | Not stated in the datasheet |
| Weight | 29 g | 29 g | 70 g | 80 g | Not stated in the datasheet | 30 g | Not stated in the datasheet |
| Certifications and standards | EN 50131-1:2006 / A1:2009 / A2:2017 / A3:2020, EN 50131-2-6:2008, EN 50131-5-3:2017, PD 6662:2017, SSF 1014v5: Larmklass R, UL 634, IP50 | EN 50131-1:2006 / A1:2009 / A2:2017, EN 50131-2-6:2008, EN 50131-2-8:2016, EN 50131-5-3:2017, PD 6662:2017, UL 634, IP50 | CE, EN 50131-1:2006+A1:2009+A2:2017+A3:2020, EN 50131-6:2017, EN 50131-5-3:2017, EN 50131-2-6:2008 | EN 50131, IMQ | CE, EN 50131-2-6, EN 50131-6, EN 50131-5-3, FCC 15.247 | EN 50131-2-6, EN 50131-1, EN 50131-5-3, EN 50131-6:Type C, PD6662:2017 | EN 50131-2-6, grade 3, SBSC, Larmklass 3/4, IP43 |
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- We use only the official datasheet published by the manufacturer. No resellers, no press releases.
- If the datasheet does not state a figure, we leave it blank. We do not estimate or infer.
- We publish no prices, scores or rankings: we show the differences, the choice depends on the project.
- Each record carries the date it was read. Manufacturers revise models: check the current version before you buy.