Emerging Member
Posts: 59
Registered: ‎03-24-2016
Kudos: 19
Accepted Solution

US-8-150W Temperature Range - Is the datasheet wrong?

My US-8-150W is running ~70C +/- 5C. The data sheet says the operating temperature range is -5-40C.

 

https://dl.ubnt.com/datasheets/unifi/UniFi_Switch_DS.pdf

 

US-8-150W
Dimensions 204 x 43 x 235 mm (8.03 x 1.69 x 9.25")
Weight 1.7 kg (3.75 lb)
Total Non-Blocking Throughput 10 Gbps
Switching Capacity 20 Gbps
Forwarding Rate 14.88 Mpps
Max. Power Consumption Including PoE Output Excluding PoE Output
150W 20W
Power Method 100-240VAC/50-60 Hz, Universal Input
Power Supply AC/DC, Internal, 150W DC
LEDs Per Port RJ45 Data Ports SFP Data Ports
PoE, Speed/Link/Activity Speed/Link/Activity
Networking Interfaces (8) 10/100/1000 Mbps RJ45 Ethernet Ports
(2) 1 Gbps SFP Ethernet Ports
Management Interface Ethernet In-Band
Certifications CE, FCC, IC
ESD/EMP Protection Air: ± 24 kV, Contact: ± 24 kV
Operating Temperature -5 to 40° C (23 to 104° F)
Operating Humidity 5 to 95% Noncondensing
Shock and Vibration ETSI300-019-1.4 Standard

Is my switch running way too hot, or is the datasheet wrong? It's only powering 2x UniFi AP-AC-Pro, and using from 7-15W. Prior to uprading to UniFi 5, it used to say that ~70C was 'Normal'. UniFi 5 seems to have removed that label.

 

In this thead; https://community.ubnt.com/t5/UniFi-Routing-Switching/Unifi-8-port-switch-fanless/m-p/1521346/highli... another user mentions his is running ~70C, so I assume it's normal.

 

And also found this thread where someone posted there temps from CLI: https://community.ubnt.com/t5/UniFi-Routing-Switching/UniFi-Switch-temperature-monitoring/td-p/12084...

 

CLI reading from my switch:

US.v3.7.5# swctrl -d env
General Temperature (C): 67
Fan Duty Level: N/A
Temperature sensors:
Sensor     Temp (C)    State           Max Temp (C)
========== =========== =============== ============
TEMP-1     63          Normal          64
TEMP-2     67          Normal          67
PoE-01     51          Normal          51
PoE-02     53          Normal          55
US.v3.7.5#

Accepted Solutions
Highlighted
SuperUser
Posts: 16,770
Registered: ‎02-03-2013
Kudos: 9180
Solutions: 601
Contributions: 2

Re: US-8-150W Temperature Range - Is the datasheet wrong?

[ Edited ]

The datasheet is for the outside temperature of the environment.

 

The temperature shown are on the board and much hotter.  

 

 

 

ubiquiti certified trainer :: ubwa | uewa

View solution in original post


All Replies
Highlighted
SuperUser
Posts: 16,770
Registered: ‎02-03-2013
Kudos: 9180
Solutions: 601
Contributions: 2

Re: US-8-150W Temperature Range - Is the datasheet wrong?

[ Edited ]

The datasheet is for the outside temperature of the environment.

 

The temperature shown are on the board and much hotter.  

 

 

 

ubiquiti certified trainer :: ubwa | uewa
Regular Member
Posts: 534
Registered: ‎10-12-2009
Kudos: 172
Solutions: 19

Re: US-8-150W Temperature Range - Is the datasheet wrong?

I have the same switch and the temperature you have is normal. As ClaudeSS says the temperature stated in the datasheet is ambient temperature, but the inside temperature I think can arrive over 90ºC.

 

I have just checked mine and it is at 69ºC steady with just two Passive 24V PoE ports activated, one PoE+ port activated and the rest with normal ethernet connections.


Victor Bottacco
 Apple Consultant

Senior Member
Posts: 2,937
Registered: ‎03-25-2014
Kudos: 921
Solutions: 40

Re: US-8-150W Temperature Range - Is the datasheet wrong?

this is what mine shows and has been working like this for quite a long time.

 

General Temperature (C): 78

Fan Duty Level: N/A

Temperature sensors:

Sensor     Temp (C)    State           Max Temp (C)

========== =========== =============== ============

TEMP-1     71          Normal          72          

TEMP-2     78          Normal          78          

PoE-01     61          Normal          61          

PoE-02     62          Normal          63

Ubiquiti Certified - UEWA / UCWA
New Member
Posts: 36
Registered: ‎04-15-2014
Kudos: 4

Re: US-8-150W Temperature Range - Is the datasheet wrong?

Just to add another... Mine holds at 68℃ with 3 POE+ APs attached. 

 

Senior Member
Posts: 2,937
Registered: ‎03-25-2014
Kudos: 921
Solutions: 40

Re: US-8-150W Temperature Range - Is the datasheet wrong?

[ Edited ]

Paging @UBNT-Piotr

 

 

This might get confusing “Operating Temperature -5 to 40° C (23 to 104° F)”
Can we change it to  "Ambient Operating Temperature -5 to 40° C (23 to 104° F)"

Ubiquiti Certified - UEWA / UCWA
New Member
Posts: 1
Registered: ‎05-03-2017

Re: US-8-150W Temperature Range - Is the datasheet wrong?

[ Edited ]

My US-8-150Ws are reporting temperatures of about 80°C. The case temperature is more or less the same and it gets to 65°C at a distance of 2 cm from the top. The equipment is mounted with the RJ45 sockets on the front side.

My questions are:

 

  1. Is this thermal bevavior to be considered normal?
  2. Which software/hardware features (if any) trigger higher thermal output?
  3. What are the advises for a mounting inside a 1 cubic meter environment (along with other passively cooled equipment)?
  4. If I cut a number of slits or holes on the case ceiling, will I void the warranty?
  5. In any case, in which position should I cut these slits/holes?
  6. If I mounted the device with the ventilation holes upwards, which exact orientation should I prefer for better cooling? Would that be enough to ease the cooling down?

 

If possible I'd need official answers as I cannot follow a try-and-test approach.

TALIA!

 

New Member
Posts: 10
Registered: ‎02-06-2018
Kudos: 2

Re: US-8-150W Temperature Range - Is the datasheet wrong?

My one with 2 AP PoE+ and 3 link:

Temperature sensors:
Sensor Temp (C) State Max Temp (C)
========== =========== =============== ============
TEMP-1 65 Normal 66
TEMP-2 69 Normal 69
PoE-01 53 Normal 55
PoE-02 59 Normal 61
My Setup:

2 x UniFi AP-HD
1 x UniFi Switch 8 POE-150W
1 x UniFi controller on Fedora Linux running at Super Micro mini-server
New Member
Posts: 26
Registered: ‎01-29-2018
Kudos: 47

Re: US-8-150W Temperature Range - Is the datasheet wrong?

I was getting around the same temps as everyone here (in the 65-70C range until I added some fans.

 

I posted my setup in a story about a month ago and noted that the switches felt really hot. Also, I wanted a way to organize them more neatly, but realized you could not stack them or rack mount them.  Another member posted how he used some Ikea furniture for a custom rack. Well, I borrowed his idea and expanded on it a bit.  THis expansion also included adding some fans next to the switches.  One is 1450rpm and the other is 1150rpm. I used these before for a computer I built and they are very quiet.

Using the fans the temp dropped to 50C and 53C.

 

Here is the post showing how I did it.

https://community.ubnt.com/t5/UniFi-Stories/My-Home-Network-and-Mini-Rack-Set-up/cnc-p/2318045#M7204 

New Member
Posts: 10
Registered: ‎02-06-2018
Kudos: 2

Re: US-8-150W Temperature Range - Is the datasheet wrong?

@Lordstan but usage of wood stuff with hot things is not fire danger?

My Setup:

2 x UniFi AP-HD
1 x UniFi Switch 8 POE-150W
1 x UniFi controller on Fedora Linux running at Super Micro mini-server
New Member
Posts: 26
Registered: ‎01-29-2018
Kudos: 47

Re: US-8-150W Temperature Range - Is the datasheet wrong?

I don't think so. People mount their equipment to wood all the time.


@simca wrote:

@Lordstan but usage of wood stuff with hot things is not fire danger?


 

New Member
Posts: 33
Registered: ‎04-22-2017
Kudos: 34
Solutions: 2

Re: US-8-150W Temperature Range - Is the datasheet wrong?

Glad you liked my rack idea (grin) I expanded on it as well.

 

The switches and USG are passively cooled with no venting vertically, so I rotated the rack 90 degrees to allow heat to pass through the device. I get similar temps to what you are getting with fans.

 

Second thing I did was add some patch panels.

 

rack new ver.png

New Member
Posts: 6
Registered: ‎03-01-2018
Kudos: 1

Re: US-8-150W Temperature Range - Is the datasheet wrong?

These switches get very hot.  I am currently looking at cooling options because I can't lay my hand on the bottom of this switch for more than 6 or 7 seconds.  I'm concerned about the longevity of these switches, but I am more concerned about mounting this switch to a wall.  I only have 3 PoE devices connected, but I have 5 more to add.  Current temp is around 62C.