315 MHz RF transmitting correct code but power outlet won't switch on

I successfully used my 433 mhz transmitter (running Uno here) to toggle my ac socket using this sketch:

#include <RCSwitch.h>
RCSwitch mySwitch = RCSwitch();

void setup() {
Serial.begin(9600);
// Transmitter is connected to Arduino Pin #10
mySwitch.enableTransmit(10);
mySwitch.setPulseLength(165);
}

void loop() {

mySwitch.send(13456849, 24);

delay(1000);
mySwitch.send(13456849, 24);
delay(10000);
}

// note: using 24 bit, pulse length 165