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Infinity Transmitters The GSM transmitter is a unique technology. This unit enables you to listen from an unlimited range around the world. This technology has rapidly developed allowing for small and powerful listening devices to enable you to listen to the target area from many miles away.The new generation of infinity transmitter measure just 63 x 41 x 21 mm. Simply Insert a SIM Card and call the number from any phone to hear exactly what is going on in your absence with amazing clarity. The unit can be concealed in a home, office or car and works anywhere there is a mobile phone signal. Thanks to an ultra efficient design one charge lasts up to 10 days standby and 8 hours listening time. For long-term use the transmitter can be permanently connected to any mains power supply. These state of the art listening devices are not much bigger than a cigarette packet these infinity transmitters can easily be hidden in any room office vehicle or even on a boat. Once it has been placed in position just simply dial its SIM card number from any telephone in the world and you will instantly hear all the conversations in the area. Operation is totally silent, there are no clicks or bangs! they are the best selling product on the market for long range audio surveillance Our Design engineer team is able to custom make GSM transmitters in many disguises for special use. Please contact our office and we can handle your requirement in a discreet and confidential manner. For example we have hidden within a fully functioning Clock Radio a highly sophisticated GSM transmitter along with an extremely powerful Knowles microphone, which will allow you to listen in to a whispered conversation up to 4 meters away. We can also build a mains adaptor or 6 way gang. Worlds Smallest Room Transmitter. This amazing transmitter is state of the art in low cost room bugs. Of Japanese design, this tiny device measuring just 40 X 10 X 10mm is powered by just one small watch type battery. It's tiny size concealment easy anywhere and it will pick up all conversations in a large room and transmit up to a distance of 300 metres with amazing clarity. This really is the smallest transmitter in the world and the quality of sound is incredible. Airband receiver recorder This is the ultimate receiver recorder for use with our low cost equipment. This model has been fully converted for optimum sensitivity and ease of use. It will receive fm and airband frequencies and is voice activated for unattended monitoring. The recorder section is twin speed and is switchable between 2 hours standard or 6 hour long play. This is our most popular receiver recorder. Cordless UHF telephone recorder For situations where discretion is essential, the cordless telephone recording system is perfect. The tiny telephone transmitter can be concealed anywhere along the telephone line, inside a socket or even inside the telephone itself. The receiver can then be left unattended up to a distance of 500 metres away to receive and record conversations automatically. Two models are available in twin speed. 2 hours switchable to 6 hours or 6 hours switchable to 12 hours. The frequency used is UHF to eliminate any interference and produce crystal clear recordings. The user is also able to listen to the conversations at the same time as recording. (2/6 hour) Sub-miniature digital recorder This is the latest in high technology. A miniature Panasonic digital recorder measuring just 90 X 60 X 12mm and extremely lightweight, it can be concealed almost anywhere and is ideal for bodyworn use. It uses no tapes and records with crystal clarity using state of the art circuitry. Record time is an amazing 4 hours and 20 minutes and features: simple to operate controls, timer recording, files & folders for quick retrieval, completely silent operation and much more. Works great on it's own and is fully compatible with all our range of receivers and amplifiers. Nokia 6600 Spy Phone with text forwarding. This modern Spy Phone allows you to call in and listen in around the spy phone user and will also forward you copies of every text message sent and received. Easy to set up and use. The phone is in used but refurbished condition and is supplied unlocked to work on any network (except the '3' network in the UK). It is a camera phone, and is tri-band, which means it will work all over the world, including the US. This spy phone comes complete with battery, and a mains charger is included for UK customers only (car charger included for non UK customers). No memory card included. FIRBANK BUREAU INVESTIGATION ------------------------------------------