Self-contained surveillance apparatus
Sensor
Sensor cover
Sensor for lavatory fixtures
Sensor holder for bin
Sensor housing for actuating outdoor lighting switches
Sensor housing for actuating street lamps
Sensor pad for controlling airbag deployment
Service reminder
Signal coupler unit
Signal for indicating the proximity of vehicle
Signal for indicating the proximity of vehicles
Signal input and output unit
Signal light to indicate the usage of a telephone in the home
Signal monitor for an automotive turn signal operation
Signal receiver for monitoring an alarm system
Signal transmitter for indicating the arrival of mail
Signal transmitting device
Signaling device
Signaling unit