FOBO 2 reading different from digital tire gauge

I have moved to the FOBO Bike 2 from the Garmin tire pressure sensors due to my new Garmin GPS not recognizing the Garmin tire pressure sensors. I have a JACO digital tire pressure gauge/inflator. I have T valve stems so I do not have to take the pressure sensors off when checking the tire pressures. The difference between the JACO gauge and the Garmin pressure readings has always been within .2 PSI of one another. The difference between the JACO gauge and the FOBO pressure readings is 1 PSI on the front tire and 2 PSI on the rear tire with the FOBO being higher than the JACO gauge on both tires. I adjusted the recommended pressures down the appropriate PSI in the FOBO app to compensate for these differences. The recommended pressure on the front tire is 36 PSI and the recommended pressure on the rear tire is 41 PSI. The front tire is a 150/80-16 and the rear tire is a 180/65-16. All pressure readings are with cold tires. Question: Is this variation within the acceptable range for the FOBO tire pressure sensors?