Webasto & Eberspacher Universal

This universal kit is primarily intended for retrofitted heaters. The unit does not support CAN bus and is not suitable for factory-fitted heaters (the heater is controlled via the car's dashboard) but if you have an existing remote control it can still work though. It also has limited support for airheaters and usually cannot control these by itself without an existing compatible controller. Contact us if you are unsure!


Technical specifications
Operating voltage12V / 24V
Power consumptionNominal Idle ~250mW / Max 5W
Heattime10 – 999 minutes (default 30min)
Dimensions65 x 28 x 80 mm
Operating temperature-40°C to +80°C
Measurable temperature-40°C to +105°C
Temperature precision± 1°C
IP-ratingIP20 (install inside vehicle cabin)
SIM-card typeMini-SIM
Mobile network4G (LTE)
BandLTE-FDD B1,B3,B5,B7,B8,B20
ModulationQPSK, 16QAM
Power classClass 3

(Review of an older model)
Works great. Easy install. The app is easy and clear to use. 10+ , fast delivery to finland.

OTACELL.SE Thank you for your feedback. Have a nice day!


(Review of an older model)
Works perfect with Eberspacher installed in Audi A4. Five stars and highly recommended!

This would be nice to have for me: I like to use the SMS confirmation and only feature request would be to see battery voltage in the return SMS before heater start to evaluate battery state of charge easier.

OTACELL.SE Thank you for your feedback Tuomas. I understand what you mean. First I would like to point out that most heaters will have low voltage detection built in to prevent draining the battery but we will consider this in the next design meeting as I think it is a good idea and easy to implement and lets the user make the final decision. Thank you. Best regards, Andreas


(Review of an older model)
Installed it in my caravan. so nice to be able to call it!


(Review of an older model)
Perfectly working! // Toivo, Finland


(Review of an older model)
Super fast shipping! Took me 20 min to install and it feels and works great! Recommended! Regards, Jacob


(Review of an older model)


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Webasto & Eberspacher Universal

              6 reviews

  • Product Code: OTAC-PH5-C00
  • Availability: In Stock
  • 239.60€
  • Excl. VAT: 239.60€

Available Options

Remote control for Webasto and Eberspacher heaters using mobile app

This is the fifth generation of our popular APP / SMS remote control for Webasto and Eberspächer heaters


With the OTAC-PH5, you can remotely control your vehicle preheater or airheater via SMS, phone calls or our simple iPhone and Android app. Works together with waterheaters and airheaters that are started with analog control signal (+12/24V) or W-bus. The potential-free outputs can also replace e.g. an already existing pushbutton. You can also connect a temperature sensor (sold separately) so you can see what temperature it is.


The unit is developed and manufactured in Sweden* and rigorously tested & well proven. We use only high quality components from authorized distributors. We offer a 2-year guarantee on all of our products!

The unit uses 4G (LTE) mobile network and will not be affected by 2G (GSM) sunset.

● Works like Eberspächer EasyStart Web and Webasto ThermoConnect but with SMS.

● Can be used with a pre-paid SIM-cards; no subscriptions or ongoing costs except balance.

● Control and set up the device directly in the app. No complicated commands or coding required.

● Simple Iphone and Android app available, "GSMS Remote Control" in Appstore and Google Play.

● For both 12V and 24V systems, also works with heaters in trucks and construction machines.

● Add a start/stop pushbutton with indicator to manually control the heater without your phone.

● Turn on the heat in recreational vehicles in advance, be it the caravan, motorhome or boat.

● Also works with Webasto's and Eberspächer's own apps; "Thermo Call" / "EasyStart GSM".

● Schedule start; select one time and date in the future when you want the heater to start.

● Two potential-free outputs and W-bus support means that the unit works together with most heaters.

● Low power consumption and good coverage with its external antenna.

The only thing more you need is a SIM-card, read more about it HERE.

*PCB (bare board) and enclosure made in China. Pick-and-placed, assembled and tested in Sweden.

otacell.se is not affiliated with Webasto or Eberspächer in any way.