Extra low voltage (ELV) means voltage of 50V or less (AC RMS), or 120V or less (ripple-free DC). Low voltage (LV) means voltage greater than ELV, but not more than 1000V (AC RMS) or 1500V (ripple-free DC). High voltage (HV) means voltage greater than low voltage.
ELV Systems. ELV (Extra-Low Voltage) systems require low electricity supply voltage to operate, with low risk of electrical shock.
ELV covers all the new modern technologies that are increasingly becoming must-have systems in every building such as data network, CCTV, fire alarm systems, public address systems, audio/video solutions, access control and intrusion detection systems, home automation, and much more!
The SIGA-270 and SIGA-278 series Manual Pull Stations are part of EDWARDS’s Signature Series system. EDWARDS’s double action single stage SIGA-278 station is a contemporary style manual station made from durable red colored lexan. To initiate an alarm, first lift the upper door marked “LIFT THEN PULL HANDLE”, then pull the alarm handle.
The SIGA-LED Remote LED Alarm Indicator is a polarized device that provides visual indication when a detector initiates an alarm. A clear lens, light emitting diode pulses on and off in case of an alarm condition
The Signature Series smoke detectors bring advanced sensing technology to a practical design that increases efficiency, saves installation time, cuts costs, and extends property protection capabilities. Continuous self-diagnostics ensures reliability over the long-haul, while the latest thermister technology makes these detectors ideal wherever dependable heat detection is required. The SIGA-HRD is an intelligent fixed temperature/rate-of-rise fire detector. It monitors the temperature of the surrounding air and analyzes the data from the sensor to determine whether to initiate an alarm. The rate-of-rise heat function quickly detects a fast, flaming fire. The fixed-temperature heat function detects fire when the air temperature near the detector exceeds the alarm point.
The NC-MC-0-G is a green manual call point for recess mount applications on most industry standard, high quality wall boxes. For surface mount applications an optional, colour matched back box is available.The call point offers one normally open contact in series with a 0 resistor, as well as a single pole, changeover contact with common, normally open and normally closed connections. It is supplied with a EN54 style resettable element, pluggable connectors for both contacts, a handy wire bridge to help with cable continuity testing, as well as a test key that doubles up as a service tool for disassembly of the device.