diff --git a/NEWS.adoc b/NEWS.adoc
index bc731f9339..a9059723ac 100644
--- a/NEWS.adoc
+++ b/NEWS.adoc
@@ -249,6 +249,8 @@ https://github.com/networkupstools/nut/milestone/12
      continues polling rather than triggering expensive reconnection attempts.
      True disconnections are still detected via other error codes or when all
      polls fail. [issue #3116]
+  * `arduino-hid` subdriver enhanced with `ups.load`, `input.voltage` and
+    `output.voltage` readings where supported (e.g. Ugreen US3000). [#3281]
 
  - `nut-scanner` tool updates:
    * Fixed `nut-scanner` search for "simulation devices" to not use only the
diff --git a/docs/nut.dict b/docs/nut.dict
index ed5acfb1ff..e81d1fc663 100644
--- a/docs/nut.dict
+++ b/docs/nut.dict
@@ -1,4 +1,4 @@
-personal_ws-1.1 en 3645 utf-8
+personal_ws-1.1 en 3646 utf-8
 AAC
 AAS
 ABI
@@ -1434,6 +1434,7 @@ UUU
 UUUU
 UX
 Ubuntu
+Ugreen
 Ulf
 Ulfat
 Uncomment
diff --git a/drivers/arduino-hid.c b/drivers/arduino-hid.c
index 4aa47c685d..1bf448cf5b 100644
--- a/drivers/arduino-hid.c
+++ b/drivers/arduino-hid.c
@@ -36,7 +36,7 @@
 #include "main.h"	/* for getval() */
 #include "usb-common.h"
 
-#define ARDUINO_HID_VERSION	"Arduino HID 0.21"
+#define ARDUINO_HID_VERSION	"Arduino HID 0.22"
 /* FIXME: experimental flag to be put in upsdrv_info */
 
 /* Arduino */
@@ -110,6 +110,10 @@ static hid_info_t arduino_hid2nut[] = {
 	{ "battery.charge.low", 0, 0, "UPS.PowerSummary.RemainingCapacityLimit", NULL, "%.0f", HU_FLAG_SEMI_STATIC, NULL},
 	{ "battery.charge.warning", 0, 0, "UPS.PowerSummary.WarningCapacityLimit", NULL, "%.0f", HU_FLAG_SEMI_STATIC, NULL},
 
+	{ "ups.load", 0, 0, "UPS.PowerSummary.PercentLoad", NULL, "%.0f", 0, NULL },
+	{ "input.voltage", 0, 0, "UPS.PowerConverter.Input.[1].Voltage", NULL, "%.1f", 0, NULL },
+	{ "output.voltage", 0, 0, "UPS.PowerConverter.Output.Voltage", NULL, "%.1f", 0, NULL },
+
 	/* USB HID PresentStatus Flags
 	   TODO: Parse these into battery.charger.status
 	*/