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Description
Dahua ARM9A4-P-W2(868) AirShield Draadloze Multi-IO-zenderProductbeschrijving De Dahua ARM9A4 P W2(868) draadloze multi IO zender verbindt bedrade detectoren en sirenes naadloos met moderne draadloze systemen. Met 16 alarmingangen, 4 uitgangen, PoE, netwerkconnectiviteit en batterijvoeding is hij ideaal voor de integratie van bestaande systemen. De draadloze Multi IO zender maakt naadloze connectiviteit met de alarmhub mogelijk via zowel draadloze radiofrequentie als een bekabeld netwerk. Hij fungeert als
Productbeschrijving
De Dahua ARM9A4-P-W2(868) draadloze multi-IO-zender verbindt bedrade detectoren en sirenes naadloos met moderne draadloze systemen. Met 16 alarmingangen, 4 uitgangen, PoE, netwerkconnectiviteit en batterijvoeding is hij ideaal voor de integratie van bestaande systemen.
De draadloze Multi IO-zender maakt naadloze connectiviteit met de alarmhub mogelijk via zowel draadloze radiofrequentie als een bekabeld netwerk. Hij fungeert als een brug en verbindt de alarmhub met de bestaande bedrade detector en sirene. Hierdoor kunnen geactiveerde alarmen van de bedrade detector naar de alarmhub worden verzonden, die vervolgens commando's naar de sirene stuurt. Dit maakt het eenvoudig om uw bestaande bedrade detectors en sirenes te integreren in het nieuwe draadloze alarmsysteem. Hij bespaart kosten en breidt uw beveiligingsoplossing draadloos uit.
Specificaties
| Port | |
| Alarmingang | Ondersteunt lokale 16-kanaals alarminvoer, kanalen 1 tot 6 ondersteunen pulsdetectie en kanalen 1 tot 16 ondersteunen 0EOL/EOL/2EOL/3EOL, aangesloten over een maximale afstand van 500 m (1640,42 ft), (kabeltype Rvv2*2.8, geen sterke interferentie van het elektriciteitssignaal) |
| Alarmuitgang | Ondersteunt 4 lokale kanalen (max. 30 VDC, 3A) |
| Netwerkmodus | Ethernet |
| Netwerkpoort | 1 × RJ-45 10/100 Mbps Ethernet-poort; PoE-voeding |
| Oplaadbatterij | Ja (12 V, 7 Ah. De reservebatterij is niet inbegrepen). |
| Hulpvermogenuitgang | 2 ingebouwde hulpuitgangen, 14,5V, totaal 1A (PoE), 2A (niet-PoE) |
| Functie | |
| Indicatielampje | Eén indicator (indicatorstatus) |
| Knop | 1 × aan/uit-knop, 1 × resetknop |
| Update op afstand | Ondersteunt cloudupdates |
| Detectie van lage batterijspanning | Ja |
| Manipulatie | Ja |
| Technisch | |
| Scenario | Binnen |
| Draadloze | |
| Carrier frequency | 868 MHz |
| Zendervermogen (EIRP) | limiet 25 mW |
| Communicatiemechanisme | Tweewegs |
| Communicatieafstand | RF: Tot 1600 m (5249,34 ft) in een open ruimte |
| Versleutelingsmodus | AES128 |
| Frequentiehopping | Ja |
| Algemeen | |
| Voeding | 100–240 VAC, 50/60 Hz. PoE (802.3at) |
| Voedingstype | Type A |
| Standbytijd | Statische stand-by: tot 30 uur |
| Drempelwaarde voor lage batterijspanning | 11.000 mV |
| Drempelwaarde voor batterijherstel | 12.000 mV |
| Stroomverbruik | Ruststroom bij 220 VAC (40 mA Irms) Maximale stroom bij 220 VAC bij 2A belasting + laden (315 mA Irms) Ruststroom PoE (125 mA) Maximale stroom PoE bij 0,75A belasting + laden (612 mA) |
| Bedrijfstemperatuur | –10 °C tot +50 °C (+14 °F tot +122 °F) |
| Bedrijfsvochtigheid | 10%–90% |
| Productafmetingen | 304 mm × 235 mm × 90,8 mm (11,97" × 9,25" × 3,57") |
| Nettogewicht | 1,22 kg (2,69 lb) |
| Brutogewicht | 1,78 kg (3,92 lb) |
| Installatie | Wandmontage |
| Behuizingsmateriaal | PC + ABS |
| Uiterlijke kleur | Wit |
| Bescherming | IP30 |
| Certificeringen | CE |
| Anticorrosieniveau | Basisbescherming *De producten zijn ontworpen voor algemeen gebruik en zijn toepasbaar, zelfs in gebieden waar geen specifieke eisen voor corrosiebescherming gelden. |
| Bewaartemperatuur | –10 °C tot +55 °C (+14 °F tot +131 °F) |
| Opslagvochtigheid | 10%–90% |
| Verpakkingsafmetingen | 369 mm × 140 mm × 280 mm (14,53" × 5,51" × 11,02") (L × B × H) |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 4
Solid little workhorse
Color: Space Grey
Works well. Key part of my espresso setup. Battery charge lasts. Easy to use. My only gripe is that the power switch can be hard (for me) to turn on and off without lifting it up to find it.
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Worth it!
Color: Black
A necessity for anyone trying to elevate their espresso making game. I use this to measure my beans and to also measure the shot I pull and how long it takes to pull. It’s great quality and totally worth it. The scale is very quick to start when the shot starts to pull. Easy to use and a great scale.
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Reviewed in the United States on April 2, 2026
★★★★★ 5
Works prefectly, accurate, easy to use, and looks great.
Color: Black
I didn't expect much but it works really well and seems to be very accurate. It's much more sensitive (to 0.1g) than the scale I was using to measure my coffee and the autostart timer works really well. Also, unlike my other scale, this one is USB-C rechargable and so far has no indication of needing a recharge after a week or so of daily use. My other scale uses CR2032 batteries and goes through a pair every three weeks, so being able to recharge instead is quite nice.
It's small and I can use it to time the extraction and also use it to measure out heated water for tea, or whatever I need. This is definitely a steal for the price.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Great value and full-functioned.
Color: Black
This is a simple, elegant little scale with timer. It's perfect for use with a small espresso machine like my Breville Bambino Plus. It shifts easily from counter use weighing beans before grinding, to placing on the drip tray to time and weigh shots. The top is smooth and water resistant. I think it's a great value.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Premium experience from a scale
This scale is not cheap, but it comes with a premium experience. The overall build quality is excellent, and it looks and feels great. Scale is extremely sensitive and response, and very consistent. Quick to zero, quick to turn on. Display is clear and easy to read. Well insulated from water, with only the bottom being semi-exposed to liquids (note that it is NOT waterproof, so still be careful - do not submerge it).
It also has an espresso mode which can be toggled on/off. That mode will automatically tare when placing things on it, meaning you can weigh your beans, take off the bowl and put back on a cup to brew the espresso into, all without tareing manually. It also detects when you're actually brewing, and it does so by detecting a steady flow of liquid. This specifically can be a bit finicky, it may or may not work for you depending on your machine and how you brew.
My only single complaint is the volume of the beeping. By default it plays a loud beep whenever you're using the touch buttons. It is very loud and I turned it off immediately. Unfortunately it seems there is no way to lower the volume on the beeps. Not a deal-breaker at all for me, but something to consider if you care about audio feedback.
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Reviewed in the United States on April 5, 2026
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