diff --git a/devices/presence_ticker/src/presence_ticker.cpp b/devices/presence_ticker/src/presence_ticker.cpp
index 172d121..3ccc500 100644
--- a/devices/presence_ticker/src/presence_ticker.cpp
+++ b/devices/presence_ticker/src/presence_ticker.cpp
@@ -22,15 +22,16 @@ void setup() {
 }
 
 void loop() {
-	if (counter % SEND_VCC_INTERVAL == 0) {
-		sensor.sendStateAndVoltage(true);
-		counter = 0;
+	if (counter == 0) {
+		sensor.sendStateAndVoltage(false);
 	} else if (counter % SEND_INTERVAL == 0) {
-		sensor.sendState(true);
+		sensor.sendState(false);
 	}
 	TinyPower::sleep();
 }
 
 ISR(WDT_vect) {
-	counter++;
+	if (++counter % SEND_VCC_INTERVAL == 0) {
+		counter = 0;
+	}
 }