Ultrasonic sounds are believed to inhibit rat and cockroach infestations. The FK929 produces a penetrating signal of 10-33kHz which it disperses through an efficient piezo loudspeaker which is included in the kit.
Power Supply : 9VDC @ 48mA max.
Frequency : Adjustable over the range 10kHz-33kHz
PCB Dimensions : 2.11" x 1.66" x 0.8" (53.6mm x 42.2mm x 22mm)