diff --git a/code/espurna/relay.ino b/code/espurna/relay.ino
index e5e5788e..1c361a60 100644
--- a/code/espurna/relay.ino
+++ b/code/espurna/relay.ino
@@ -631,11 +631,11 @@ void relaySetupAPI() {
         snprintf_P(key, sizeof(key), PSTR("%s/%d"), MQTT_TOPIC_PULSE, relayID);
         apiRegister(key,
             [relayID](char * buffer, size_t len) {
-				snprintf_P(buffer, len, PSTR("%lu"), _relays[relayID].pulse_ms);
+                dtostrf((double) _relays[relayID].pulse_ms / 1000, 1-len, 3, buffer);
             },
             [relayID](const char * payload) {
 
-                unsigned long pulse = String(payload).toInt();
+                unsigned long pulse = 1000 * String(payload).toFloat();
                 if (0 == pulse) return;
 
                 if (RELAY_PULSE_NONE != _relays[relayID].pulse) {
@@ -751,7 +751,7 @@ void relayMQTTCallback(unsigned int type, const char * topic, const char * paylo
                 return;
             }
 
-            unsigned long pulse = String(payload).toInt();
+            unsigned long pulse = 1000 * String(payload).toFloat();
             if (0 == pulse) return;
 
             if (RELAY_PULSE_NONE != _relays[id].pulse) {