diff --git a/README.md b/README.md
index 4ec8c11..dc0f697 100644
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@ All libraries, schematic and PCB used in electropepper Projects.
 * Connector screw 2 pins, 5.08
 * Connector screw 3 pins, 5.08
 * D2PAK
-* HK4100F
+* HK4100F(use schematic relay G5LE-1)
 * HLK-PM01
 * HM-11
 * Jumper 2 pins SMD 1.27