Phonoform PIR Sensor Phonoform PIR Sensor from Bill Roy Phonoform PIR Sensor The form constantly plays the sound of crickets. Once the PIR sensor is tripped the sound clip will stop playing until movement stops. gLike Phonoform PIR Sensor The form constantly plays the sound of crickets. Once the PIR sensor is tripped the sound clip will stop playing until movement stops. 3D Modeling Interaction Design Share R 7 n Bill Roy Product Design Watertown, NY Follow Contact