KWJ Engineering Inc.
8430 Central Avenue Suite C
Newark, CA 94560
USA

Phone (Corporate/Support): (510) 794-4296
FAX: (510) 574-8341
E-Mail Enquiries: sales@kwjengineering.com

Transducer Technology Division/EcoSensors Division/Pocket Instruments
KWJ Engineering Inc.
8430 Central Avenue Suite C
Newark, CA 94560
USA 

Toll Free: (800) 472-6626
Phone (Corporate): (510) 405-5911
FAX: (510) 574-8341
E-Mail Enquiries: support@transducertech.com, sales@ecosensors.com, pockets@kwjengineering.com

EcoSensors Division (Returns/calibrations for UV-100 and C-21 ONLY)
Eco Sensors Division of KWJ Engineering Inc.
551 West Cordova Road, #40
Santa Fe, New Mexico 87505
USA

Phone: (510) 405-5911
Fax: (510) 574-8341
E-Mail Enquiries: info@ecosensors.com