GS1500-24PoE for Ubiquti 12Volt WiFi

Hun
Hun Posts: 17
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edited August 26 in Switch
Hello All, 
this Ubiquti WiFi unit is powered up with 12Volts power injector....
Is it possible to power up from GS1500-24P?
Thank you for your time....

Accepted Solution

  • mMontana
    mMontana Posts: 994
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    edited September 2021 Answer ✓
    Answer is "simple": IEEE 802.3af compliance.
    Moreover, 44V is minimum available if necessary at the switch port, 57V is the maximum at the port, 350mA as top current. At the endpoint, minimum is 37V, same maximum.
    Long story short, if your current is not "that" high and the voltage is not triple or quadruple, the user device will take advantage of the higher voltage for lower the current drain. DC-powered HiFi amplifier can take advantage of +12/25% more voltage or 50-100% more current, with a switching power adapter, gaining better drive management for the speakers (more controlled basses). Some even more, but refer to the specs of the amplifier producer.
    Moreover, Ubiquiti declares compliance with 802.3af. If the AP get fried... IMVHO the AP producer should be questioned for reasons why happened.

    And no. I have no relations with Zyxel...


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All Replies

  • mMontana
    mMontana Posts: 994
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    Specs sheet of GS1500-24P don't provide much details about PoE features...
    except "802.3af support". Which should mean that your AP should work if requires the same PoE specs (up to PoE Class 3)
    In case of PoE+ (802.3at/PoE Class 4) could not work...

  • Zyxel_Melen
    Zyxel_Melen Posts: 438
    Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate 25 Answers
     Master Member
    Hi @Hun,

    Just like mMontana said, GS1500-24P only support 802.3af.
    If the Ubiquiti WiFi unit isn't a 802.3af PD, it can't be powered up by GS1500-24P.
    May I know which model is your Ubiquiti WiFi unit?



    Melen
  • Hun
    Hun Posts: 17
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    Hello,
    thanx for replying ..... I need to get up in the ceiling to find out what model I have..... Unfortunately I'm unable to get this info from the UNIFI controller..... Man, I wish I could power it it up from this switch.....
    Thank you for now for your time!
  • Hun
    Hun Posts: 17
    First Comment Friend Collector
     Freshman Member
    mMontana said:
    Specs sheet of GS1500-24P don't provide much details about PoE features...
    except "802.3af support". Which should mean that your AP should work if requires the same PoE specs (up to PoE Class 3)
    In case of PoE+ (802.3at/PoE Class 4) could not work...

    Hello, 
    Unifi AP AC Lite
    model is : UAP-AC-LITE
    Input 24V 0.5A GigE PoE 802.3af Poe
    So this means, it can't be powered up from  my Zyxel?
  • Hun
    Hun Posts: 17
    First Comment Friend Collector
     Freshman Member
    Hello, 
    Unifi AP AC Lite
    model is : UAP-AC-LITE
    Input 24V 0.5A GigE PoE 802.3af Poe
    So this means, it can't be powered up from  my Zyxel?

  • Hun
    Hun Posts: 17
    First Comment Friend Collector
     Freshman Member
    Hi @Hun,

    Just like mMontana said, GS1500-24P only support 802.3af.
    If the Ubiquiti WiFi unit isn't a 802.3af PD, it can't be powered up by GS1500-24P.
    May I know which model is your Ubiquiti WiFi unit?



    Hello, 
    Unifi AP AC Lite
    model is : UAP-AC-LITE
    Input 24V 0.5A GigE PoE 802.3af Poe
    So this means, it can't be powered up from  my Zyxel?
  • mMontana
    mMontana Posts: 994
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    Datasheet says... 802.3af/A
    Which i don't know if... your GS1500-24POE supports.
    @zyxel_melen could you please enlight some details about that?




  • Hun
    Hun Posts: 17
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    Montana, sorry I'm not sure if I follow you on this.....what info should I provide you with....?
    The data sheet says this:
    Power Method 802.3af/A PoE 24V Passive PoE (Pairs 4, 5+; 7, 8 Return)
  • Zyxel_Melen
    Zyxel_Melen Posts: 438
    Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate 25 Answers
     Master Member
    Hi @Hun,

    The UniFi data sheet shows the Power Method 802.3af/A PoE 24V Passive PoE (Pairs 4, 5+; 7, 8 Return), which means this AP can be powered up by directly connecting to a PoE switch or powered up by connecting with a PoE injecter.
    So, you can connect your AP to GS1500 directly since this AP is a 802.3af PD.

    Melen
  • Hun
    Hun Posts: 17
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     Freshman Member
    Great info!
    Since the original injector supplies 24V and the switch port is capable of 48V, how is guaranteed that the AP wont get fried?