sensor

Electronic Sensor Circuits & Projects
$12.95
Simple, hand written, to the core, no fluff, no pork, no jabber, just straight circuit and sensor ideas.
The book looks like it was all hand written in perfect engineering fashion, this is a lost art only mastered by people who have enormous patience and a twinge of super-genious.
This book is a must! Even if you don't understand electronics, the writing alone is incredible!

Gillette Sensor3 System Replacement Cartridges, Pack of 8 Cartridges
$18.59
I used to rely on Sensor Excel until got a sample of this blade included in an Excel pack. In Sensor 3, the extra blade does not add bulk but improves shave quality and has longer life. Finally, very good value.
Recommended.

More recent Gillette cartridges IMO have too many blades, which, for my face, makes it very difficult to reach under the nose.

I would estimate my facial hair density as medium - well, maybe a 6-7 on the scal of 10.

Skylink PS-434A Motion Sensor
$36.14
many of their products dont work properly from the start
horrible customer serviceSkylink SC-1000 Complete Wireless Alarm System

Reverse Parking Sensor System with Wireless Rear View Mirror Display
$137.95
La instalaci���n casera del sistema de marcha atr���s lleva de 2 a 3 horas. Se debe bajar la cubierta del parachoques trasero (en caso de cubierta pl���stica), medir con cuidado los sitios donde estar���n los sensores, perforar con la broca que viene incluida, montar los sensores, conectarlos al m���dulo central, el cual debe alimentarse con los cables de las luces de marcha atr���s, para que el sistema solo se active cuando el veh���culo este en marcha atr���s. Cuidado con la posici���n al insertar el sensor el la perforaci���n, ya que tiene su lado. El espejo con la pantalla se���alizadora debe igualmente alimentare con los cables de alimentaci���n de marcha atras (por supuesto los que pasan debajo del dash), la comunicaci���n entre el m���dulo central (donde se conectan los cuatro sensores) y el espejo con la pantalla se���alizadora es inal���mbrica.
El sistema es funcional, las distancias se���aladas y la posici���n son aceptables,. Si los sensores se ensucian o rayan dan una lectura "mentirosa", se deben estar limpiando y tener cuidados de que no se rayen.