Magenta Bat Detector Kit - This kit uses quality components to make a detector which is very good value for money. It makes a detector which functions well and is ideal for beginners.

Microbat - A small dual-frequency detector, ideal for children because of its easy controls and fun exterior with bats eyes which light up. Simple to use and not tuning required, as it picks up the frequencies of the most common bat species - 26kHz (noctules) and 46kHz (pipstrelles) - only. 1 headphone socket. Takes 9V alkaline battery (included).

Pettersson D-200 - An advanced heterodyne detector combining digital technology with an exceptionally sensitive microphone. It has a fully backlit digital LCD display which provides a very accurate value of the tuned frequency. The controls are on the side of the case, making it easy to adjust in the field.

Magenta MkIII Bat Detector - Developed from the popular MkII, the Magenta MkIII heterodyne bat detector features digital frequency display, high stability, easily tuned local signal oscillator, and advanced amplification and filtering. Using a heterodyne circuit, the incoming ultrasound is filtered then mixed to translate the frequency into the audible range. The quartz-accurate 3-digit red LED displays the frequency, and a light sensor dims the display to give the ideal brightness as light levels change. The microphone is the latest Murata (Japanese) type, and the loudspeaker is a super low profile unit with a weatherproof Mylar cone. The circuit is constructed using surface-mounted components and is compact, stable and reliable.

Batbox III Bat Detector - Excellent value, the Batbox 3 is a high-quality, low-noise detector is used by thousands of naturalists. With components selected for optimum performance and durability, it is a compact, high-fidelity unit, and the backlit frequency control makes it easier to read at night.

Pettersson D-100 Bat Detector - This detector employs three microphones of two types to give maximum sensitivity across its tuneable range. With backlit frequency control for easy reading at night, it is ideal for the first-time user, yet sensistive enough for serious bat research.

Magenta MkIIb Bat Detector - This detector is very good value for money. If this is your first detector this is a good basic detector which makes an economical introduction to bat detecting. This new MkIIb model has improved sensitivity and now also has an output socket for recording.

LT1 920mg Standard - Weight 920mg, battery life 26-28 days

LT1 2.5g Standard - Weight 2.5g, battery life 2.5-3 months

LT1 500mg Reed Switch - Weight 520mg, battery life 10-12 days, reed switch activation

LT1 620mg Reed Switch - Weight 620mg, battery life 15-16 days, reed switch activation

LT1 920mg Reed Switch - Weight 920mg, battery life 26-28 days, reed switch activation

LT1 2.5g Reed Switch - Weight 2.5g, battery life 2.5-3 months, reed switch activation

Standard 12V Rechargeable Battery - A valve-regulated, sealed lead acid type rechargeable battery providing a 12V power supply. This battery provides 17Ah (sufficient to power any actinic moth trap). Battery size 180 x 165 x 70 mm Weight 5.6kg Mains charger included

Lightweight 12V Rechargeable Battery - A valve-regulated, sealed lead acid type rechargeable battery providing a 12V power supply. This smaller rechargeable battery is considerably lighter to carry around but produces less power than the standard rechargeable battery. It provides 7Ah which is sufficient to power a Heath moth trap, but is not recommended for Skinner traps. Battery size 150 x 95 x 65mm Weight 2.5kg Mains charger included

CR123A Battery - Suitable for most bat detectors

LR1 Batteries, 2-pack - 2 x 1.5 Volt alkaline batteries Duracell N (MN9100, LR1, KN)

LTM - Weight

LTM - Weight

LTM 800mg standard - Weight 800mg Battery life 26-28 days

LTM 1.4g standard - Weight 1.4g Battery life 6-7 weeks

LTM - Weight

LTM - Weight

LTM 800mg Reed Switch - Weight 800mg Battery life 26-28 days Reed switch activation

LTM 1.4g Reed Switch - Weight 1.4g Battery life 6-7 weeks Reed switch activation

LT1 520mg Standard - Weight 520mg, battery life 10-12 days

LT1 620mg Standard - Weight 620mg, battery life 15-16 days

Regal 2000 Telemetry Receiver - A lightweight portable receiver which is simple to operate but with many additional features. Key controls are press button frequency selectors, illuminated field strength meter and frequency selectors for night time use. Sealed in an aluminium case, the unit comes complete with a heavy leather carrying case.

Battery Charger for Regal 2000 - A lightweight portable receiver which is simple to operate but with many additional features. Key controls are press button frequency selectors, illuminated field strength meter and frequency selectors for night time use. Sealed in an aluminium case, the unit comes complete with a heavy leather carrying case.

Australis 26K Scanning Receiver - A sensitive scanning receiver with graphic liquid crystal display showing frequency, signal strength and mode data. Frequency selection is in 1kHz steps, with fine tuning in 100Hz steps, and the memory scanning rate which is switchable between 1.25 or 2.5 seconds. The unit weighs less than 1kg and aluminium sheet fabrication with sealing prevents intrusion of dust, dirt and spray. Supplied with a heavy leather carrying case.

Battery Charger for Australis 26k Scanning Receiver - A sensitive scanning receiver with graphic liquid crystal display showing frequency, signal strength and mode data. Frequency selection is in 1kHz steps, with fine tuning in 100Hz steps, and the memory scanning rate which is switchable between 1.25 or 2.5 seconds. The unit weighs less than 1kg and aluminium sheet fabrication with sealing prevents intrusion of dust, dirt and spray. Supplied with a heavy leather carrying case.

Model AY/C - A three-element Yagi collapsible antenna, gamma tuned for receiving from longer distances. Heavy duty spring loaded folding elements and pistol grip handle make this the ideal antennae for field work.

Model AW - This is a collapsible wand or stick antenna, used for close work up to 50m. It can pinpoint, to the square inch, hard to locate or buried transmitters.

Model AO - A magnetic-based omni-directional 1 metre whip antenna, designed to sit on the roof of a vehicle and capable of withstanding wind pressure of 100kph

Antenna Booster - Fits exisiting antennae, boosting signals that may be diminished in cables or old receiving equipment. Ideal for towers.

Microprocessor Period/PPM Meter - This CMOS microprocessor-based meter measures the period of pulses from radio transmitters as they vary their repetition rate according to their sensor input (temperature, movement, mortality etc). The 4-digit LCD shows period in two ranges, 0.200 to 9.999 seconds and 10.00 to 59.99 seconds, with pulses per minute in one range of 1-300ppm. The meter autoranges in period mode to select the most accurate range for display purposes. A mode push button turns on the meter initially, and subsequently toggles between display modes of period and pulses per minute. The meter also has an auto-off mode where it will turn itself off after 10 minutes, and a low battery alert.

Period Meter Dongle and Software - An option is available for a PC computer interface in the form of a dongle connected to a spare serial port, and appropriate software running on the computer can be used to upload for screen display and file storage. The screen display gives period and ppm readings. The data files can be processed as spreadsheets or custom programs can be written.