ZR3 Temperature Sensor
Hardware: undetermined · 1 players
Cheshire Micro Design
MIA Missing in action. This is known to have existed, and no copy has ever been found. If you own one, the archives would like to hear from you.
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In the magazines 1
Sinclair User #6Sep 1982 · p.37
ZX-81 TESTS THE TEMPERATURE Cheshire Micro Design has produced a temperature sensor for the ZX-81. The device, called the ZR3, plugs into the EAR and power sockets of a ZX-81 and can measure temperatures from -5 to + 100 degrees centigrade. The measurement time is one second and a USR machine code routine is provided as a listing or on cassette. The unit is hermetically-sealed and the probe can be up to 35 metres long; two metres is provided. The probe returns a number between 500 and 2000. Accuracy is claimed to be to one degree centigrade. The ZR3 can be obtained from Cheshire Micro Design, [redacted]. It costs £17.50 including post and VAT for the U.K. Foreign orders should add postage for 240 grammes.
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