Nittan Evolution Addressable Optical Smoke & Heat Multisensor (EV-PYH)

The Nittan EV-PYH (part no. F20-82420) is an analogue addressable optical smoke and heat multisensor for Nittan Evolution fire alarm systems. It is a backward-compatible replacement for the EV-PH and fully compatible with Evolution analogue addressable systems.

It uses Nittan's "PY" smoke chamber, with a spherical feature that improves light scattering and an orange LED that improves response across the fire spectrum. A fine stainless-steel micromesh keeps out dust and even the smallest insects. A Nittan algorithm reads the smoke and heat sensors together and can raise an alarm from either or both, making it less prone to false alarms than single-sensor detectors. The heat element is Category A1R.

Key features

• Orange optic LED and PY-type chamber
• 3 sensitivity settings
• Heat sensor Category A1R
• Backward compatible with the EV-PH
• Drift compensation
• Evolution FSK protocol
• EEPROM addressed with a programmer
• Omniview 360° alarm LED

Technical specifications

• Operating voltage: 20 to 38 V DC
• Quiescent current: 300 µA
• Alarm current (LED on): 6.0 mA
• Standards: EN 54-5:2017 / A1:2018; EN 54-7:2018
• Manufacturer part number: F20-82420