diff --git a/custom_components/xiaomi_home/miot/specs/spec_modify.yaml b/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
index 682495d..73faea7 100644
--- a/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
+++ b/custom_components/xiaomi_home/miot/specs/spec_modify.yaml
@@ -48,6 +48,11 @@ urn:miot-spec-v2:device:outlet:0000A002:zimi-zncz01:2:0000C816:
   prop.3.1:
     name: electric-power
     expr: round(src_value/100, 2)
+urn:miot-spec-v2:device:outlet:0000A002:qmi-psv3:1:0000C816:  # 小米智能插线板2
+  prop.3.3:  # voltage
+    unit: mV
+  prop.3.4:  # electric-current
+    unit: mA
 urn:miot-spec-v2:device:router:0000A036:xiaomi-rd08:1:
   prop.2.1:
     name: download-speed