A safety device sending alarm signals and gas/liquid mixture which device comprises a pressurized container (1) from which the gas/liquid mixture can be sprayed in the desired direction and comprises a body (13) adjusted by the container (1) which body comprises a sound transmitter (10) which can be switched on to send alarm signals to the environment and comprises a switch (3) in order to activate and maintain the spraying of the mentioned gas/liquid mixture and that the switching of the alarm signals on and the spraying of the gas/liquid mixture are both adjusted to become switched on with the help of the same switch (3). Two switching stages are adjusted for the switch (3) in the moving direction of the switch in which case at the first stage of the moving of the switch (3) the sending of the alarm signals becomes switched on and when the moving is further continued, the spraying of the gas/liquid mixture becomes switched on at the second stage of the moving.