Professional UHF VOX Transmitter (3 Mile) Transmission Range! UHF transmitter designed for covert surveillance operations or other operations as required pursuant to the gathering information for investigative purposes. Quality professional transmitter uses the highest quality surface mount components for the highest quality performance Features: Long Range Transmission Long Battery Life: VOX function is very sensitive sound and switches transmitter off when no sound is detected within target area Working Time: Transmission mode: Approximately 20 hours Standby mode: Approximately 40 days Suitable Uses: Baby listening, Nature research, etc Highly-Sensitive Microphone High Frequency stability (quartz oscillator controlled) Frequency is preset Note: UHF radio scanner/ transceiver required Product Specifications: Range 3 mile range in open field RF output power 60 mW Power supply 3 volt two" AAA" batteries Operating voltage 2 – 3,6 volt Power Consumption About 2mA-standby mode About 70mA-transmit mode Operating Frequency 416.800MHz +/-5KHz Modulation NFM VOX delay 10 sec Antenna 18cm PCB size 22x27mm Purchase your Professional UHF Long Range Audio Transmitter Today! Package Includes: UHF VOX Audio Transmitter User Manual Do not use this device for any illegal purposes!!! Buyer is fully responsible for adhering to any local, State or Federal laws Purchase Today! Professional High Quality Surveillance Device! Requires Radio UHF Radio Transceiver Click Here to Purchase! Special Order Product (Very Limited Availability) Phasing out Product Soon!! Delivery via USPS