ZCK-1 Datasheet PDF - Systemsensor advanced ideas.

Zonecheck Keyswitch for Control and Monitoring of the Zonecheck Flow Switch Tester

Electrical Specifications
Operating Voltage:  ZCK-1: 120V, 60Hz; ZCK-1E, ZCK-1EG, ZCK-1EN and ZCK-50: 220VAC, 50Hz, 3w Max.
Operating Temperature:  0°C to 49°C (32°F to 120°F)
Operating Humidity:  5% to 95% RH (non-condensing)
Mounting Options:  Includes back box for surface or flush mounting.
For pre-wiring, use a 4 11/16˝ x 4 11/16˝ back box
Operation Modes:  Self-test: Wired locally
                         Group test: Interconnected
LED Operation:  Ready state: No LED
                     Test initiation: Green LED
                     Flow switch activation: Red LED (ZCK-1), Green LED (ZCK-1E, ZCK-1EG, ZCK-1EN and ZCK-50)
Tested to EN 61010-1