fix mistakes

docs/en/unit/can.md

@@ -18,7 +18,7 @@ It has obvious advantages in the following aspects: High speed low failure rate
 
 ## Product Features
 
-- Up to 5000v isolation and withstand voltage
+- Up to 1000Vrms isolation and withstand voltage
 - Power light 
 - Built-in isolated DC-DC
 - Signal rate up to 1Mbps
@@ -49,7 +49,7 @@ It has obvious advantages in the following aspects: High speed low failure rate
     <tbody>
         <tr>
             <td>Rated withstand voltage</td>
-            <td>5000V</td>
+            <td>1000V</td>
         </tr>
         <tr>
             <td>Maximum rate</td>

docs/en/unit/iso485.md

@@ -19,10 +19,10 @@ When the project equipment needs communication control through RS485 and has hig
 - Built in CA-IS3082W isolation chip
 - Indicator light
 - Isolated DC-DC
-- Signal transmission rate: up to 10 Mbps
+- Signal transmission rate: up to 500 Kbps
 - Fail safe receiver (bus open, short circuit)
 - Supports up to 256 bus nodes
-- Up to 5000 VRMs isolation and withstand voltage
+- Up to 1000 VRMs isolation and withstand voltage
 - Development platform: Arduino, UIflow (Blockly, Python)
 - 2X LEGO™ compatible holes
 
@@ -46,7 +46,7 @@ When the project equipment needs communication control through RS485 and has hig
    </tr>
    <tr>
       <td>Withstand voltage value</td>
-      <td>5000V</td>
+      <td>1000V</td>
    </tr>
    <tr>
       <td>Maximum number of nodes</td>

docs/zh_CN/unit/can.md

@@ -11,7 +11,7 @@
 
 ## 产品特性
 
-- 高达5000v的隔离和耐压
+- 高达1000Vrms的隔离和耐压
 - 内置隔离DC-DC
 - 电源指示灯
 - 信号速率高达1Mbps
@@ -42,7 +42,7 @@
     <tbody>
         <tr>
             <td>隔离耐压值</td>
-            <td>5000V</td>
+            <td>1000V</td>
         </tr>
         <tr>
             <td>最高速率</td>

docs/zh_CN/unit/iso485.md

@@ -12,10 +12,10 @@
 
 - 内置 CA-IS3082W隔离芯片
 - 隔离DC-DC
-- 信号传输速率： 高达 10 Mbps
+- 信号传输速率： 高达 500 Kbps
 - 失效防护接收器(总线开路、 短路)
 - 支持多达 256 个总线节点
-- 高达 5000 VRMS 隔离耐压
+- 高达 1000 VRMS 隔离耐压
 - 开发平台: Arduino, UIFlow(Blockly,Pyhton)
 - 2x LEGO 兼容孔
 
@@ -39,7 +39,7 @@
    </tr>
    <tr>
       <td>耐压值</td>
-      <td>5000V</td>
+      <td>1000V</td>
    </tr>
    <tr>
       <td>最多节点数</td>