diff --git a/tcl/lockin.addon b/tcl/lockin.addon
index e09c64c..4152e76 100644
--- a/tcl/lockin.addon
+++ b/tcl/lockin.addon
@@ -1,4 +1,6 @@
-addonDesc = lock-in amplifier 7265
+addonDesc = lock-in amplifier 7270 / 7265
+
+# 7265: reduce baud rate to max. 4800
 
 makenv la -driver lockin -port 10105266.psi.ch:50000
 appendVars la.x/mV/X la.y/mV/Y la/Hz/freq