And what happens when we put 48V into a RB750UP?
Smoke?
no, it has overvoltage protection, it will just not work.
30V or 28V?
yes, in that range (29-30V)
Hello! Please, could you answer my question: does RB750UP support “reset usb power” feature? I need it to reboot 3G USB stick, and you wrote some time ago that ALL new products will support it…
Currently only SXT and OmniTIK have this feature. So, no - RB750UP doesn’t have usb power reset.
Should I consider buying on of those two for indoor use as a 3g stick router?
Neither of them is designed for indoor use. Why do you need power reset if it’s indoors? Just unplug router power if the 3G device becomes unresponsive, but this should not happen often. Why does it hang so ofen, that you need to reset it? Maybe just get a better modem?
Well, maybe you are right… All of your products support watchdog for self-rebooting, do they?
yes, but the problem is - if your 3G modem is completely locked up, soft reboot will not help, you need to physically unplug power. otherwise you could script the reboot, but it doesn’t help.
The thing is that now I have Dlink router and Huawei stick. The system hangs sometimes - but I don’t know wether it’s a Dlink or Huawei hanging… )
Edit: I think I’ll just have to buy Mirkrotik to find out)
why 0.5amps is not enough for you?.. that means 12watt power consumption/device
so use higher voltage… like 24volts and the amps used by your device will be much lower… fo ex… if you have a device that consumes 6watt… that means that if you will run it to 12 volts will draw 0.5 amps… and if you run it to 24 volts it will draw 0.25 amps
so it means.. that 0.25 is allready half of maximum 0.5amps per port on the rb750u
most ip cameras will not consume more that 8-10 watt, lets not talk about profesional screen wiper… heated motorised cameras… be resonable.. rb750up was not made for us to power a christmass tree lights from its poe ports
hey MIKROTIK look at this
http://www.remotemonitoringsystems.ca/rms200/voltmeters.php
I do not know what is the interest from you to this type of hardware… but is can make something like it for solar site monitoring and many other futures.. like controlling some relays, humidity sensors, external temp sensors, proximity sensors,switch alarm triggers…and so on, I think it will be something huge
Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?
How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?
Do not know about rb435 but you can find it yourself using a power meter reading amps putting the power meter in series with your rb435, what I know is that ubnt devices wouldn’t draw more than 8watt, they all come with 24v 0.5 ah
UBNT Rocket comes with 24V 1A PSU.
Datasheet: http://www.ubnt.com/downloads/datasheets/rocketmgps/Rocket_M_GPS_Datasheet.pdf
435G - 23.5W without cooling.
Datasheet: http://routerboard.com/pdf/285/rb435g.pdf
Are you willing to bet your wages on the fact that a product may work under certain circumstances, but will fail as the load increases?
I had 3 x RB411 with R52 and a RB750 running happily off a 24V 50W Meanwell power supply. They have 120 degree antennas and are part of a large access point. They worked perfectly for 8 months.
It’s school holidays in South Africa at the moment. The bad economy means that people are not going on holiday, but staying at home. We have seen a massive increase in wifi traffic.
This access point normally has about 20 - 30 people connected to it. Suddenly there are more than 80 people connecting to it. The RB411s started drawing more power than the Meanwell power supply could deliver and the next thing, capacitors start blowing.
After replacing the caps, I replaced the 50W PSU with a 100W PSU. Now all is happy. There are 96 people connected to that AP right now without any issues.
Tell me, how much power does a RB435 with 3 x SR-71 draw? When using 24V?
How much does a UBNT Rocket M5 draw? What size power supply get shipped with a UBNT Rocket M5 or M2?[/quote]
Do not know about rb435 but you can find it yourself using a power meter reading amps putting the power meter in series with your rb435, what I know is that ubnt devices wouldn’t draw more than 8watt, they all come with 24v 0.5 ah[/quote]
UBNT Rocket comes with 24V 1A PSU.
Datasheet: http://www.ubnt.com/downloads/datasheets/rocketmgps/Rocket_M_GPS_Datasheet.pdf
435G - 23.5W without cooling.
Datasheet: http://routerboard.com/pdf/285/rb435g.pdf
Only rocket with gps comes with that adapter,you can allways test the curent draw by yourself and not by taking values from adapters, and you can put relays on poe ports of rb 750up and power cycle even a tv 
) or your wholle house
Are you willing to bet your wages on the fact that a product may work under certain circumstances, but will fail as the load increases?[/quote]
use a relay.. mod your RB750up… or use power transistors if you do not like replays.. and you can power up and power cycle a space rocket, or anything that comes up to your mind. nothing is perfect and never will be.. but the rb750up… is usefull as it is for many people.
as you can always … if you own a car with 100hp.. you can mod is and have 150hp.
do not like rb750up because of only 0.5 ah/port… buy something else that is usefull to your setup.
rb750up is the first one. be sure that many will come supporting more power draw / port
and you know that you can use a simple rb750… and make POE ports by yourself.. and wit a transistor conected to a led that goes down on router reboot… , you can power cycle the connected devices on your rb