Prototype build of 6 pieces of EasyMotor v2 by Bdale on 2020.07.25
+## sn 7090-7339 ##
+
+Production build of 250 pieces of TeleBT v4.0b by
+[Advanced Circuits](http://4pcb.com), received 2020.08.17
+
+## sn 7340-7342 ##
+
+Prototype build of 3 pieces of TeleGPS v2.0b by Bdale on 2020.08.17
+
+## sn 7343-7442 ##
+
+Production build of 100 pieces of EasyMotor v2 by
+[Seeed Studio](https://seeedstudio.com), received 2021.01.??
+
+## sn 7443-7622 ##
+
+Production build of 180 pieces of TeleGPS v2.0c by
+[Advanced Circuits](http://4pcb.com), received 2021.03.24
+