diff --git a/devices/Eph.properties b/devices/Eph.properties
index 703f5dcc..ac1646ae 100644
--- a/devices/Eph.properties
+++ b/devices/Eph.properties
@@ -3,7 +3,7 @@ accessType=ReadWrite
 maxValue=160.0
 minValue=160.0
 offset=0.0
-precision=160
+precision=3
 resolution=NaN
 scale=1.0
-unit=160.000
+unit=eV