diff --git a/main/service/monitor.c b/main/service/monitor.c
index 1227125..2fa1e5c 100644
--- a/main/service/monitor.c
+++ b/main/service/monitor.c
@@ -298,7 +298,7 @@ void init_status_monitor()
 
 esp_err_t update_sensor_period(int period)
 {
-    if (period < 500 || period > 10000) // 0.5 sec ~ 10 sec
+    if (period < 100 || period > 10000) // 0.1 sec ~ 10 sec
     {
         return ESP_ERR_INVALID_ARG;
     }
diff --git a/page/index.html b/page/index.html
index 6a007e2..b5c2a54 100644
--- a/page/index.html
+++ b/page/index.html
@@ -379,7 +379,7 @@
                         </div>
                         <div class="mb-3 p-3 border rounded">
                             <label for="period-slider" class="form-label">Sensor Period: <span class="fw-bold text-primary" id="period-value">...</span> ms</label>
-                            <input type="range" class="form-range" id="period-slider" min="500" max="5000" step="100">
+                            <input type="range" class="form-range" id="period-slider" min="100" max="5000" step="100">
                             <div class="d-flex justify-content-end mt-2">
                                 <button type="button" class="btn btn-primary btn-sm" id="period-apply-button">Apply</button>
                             </div>