加拿大BW Auto-Test Stations
Features 
Detector fully tested in 10-30 seconds 
Easy and fully automatic 
PASS/FAIL advice on each test 
Test Stations verify all functions:
- Sensor response to gas
- Speed of response
- Visual LED alarm activation
- Audible alarm activation
Economical use of test gas 
Test Stations come complete with regulator, reinforced Teflon test-hose, AC wall-mount adaptor and 9-volt battery 
Over 350 units tested on one 9-volt battery