DSC PG4905 Wireless PowerG Temperature Sensor 433 MHz CE

The DSC PG4905 is a 433 MHz PowerG wireless temperature detector designed for professional life-safety and security installations across Europe and other CE-listed markets. It continuously monitors ambient temperature using a high-accuracy internal sensor or an optional external probe—enabling early warning of abnormal conditions such as pipe-freeze, overheating server rooms, cold-storage breaches, or unoccupied-property environmental changes. Operating on DSC's frequency-hopping, spread-spectrum PowerG protocol, the PG4905 delivers robust RF immunity and fully supervised two-way communications to compatible PowerSeries Neo, PowerSeries Pro, and Qolsys control panels—without the cost or complexity of wiring. Programmable warning and alarm thresholds let installers configure discrete alert levels independently at the panel, eliminating repeated trips to the keypad during commissioning. A single CR123A lithium cell delivers up to seven years of service life, and automatic battery-status reporting ensures proactive maintenance. Front and back tamper protection, along with full supervision, meet commercial-grade integrity requirements.

Key features & benefits

• 433 MHz PowerG Protocol — Operates at 433 MHz using DSC's PowerG frequency-hopping spread-spectrum technology, providing industry-leading resistance to RF jamming and interference (RFI immunity >20 V/m, 80–2000 MHz) for CE-listed European and rest-of-world deployments.
• High-Accuracy Dual-Sensor Capability — Measures temperature to ±1.5°C (±2.7°F) via the built-in internal sensor or an optional external probe—enabling monitoring of both the installation environment and a remote point such as a pipe, duct, or outdoor location.
• Extended External Probe Reach — The optional external probe connects via a 3.5 m cable, giving installers the flexibility to monitor temperatures at hard-to-reach or environmentally exposed points without relocating the main detector body.
• Programmable Warning and Alarm Thresholds — Independent temperature warning and alarm set-points are configurable at the panel, allowing separate low and high threshold alerts that trigger keypad chimes or full system alarms—eliminating repeated site visits during setup.
• 7-Year Battery Life with Automatic Supervision — Powered by a single 3 V CR123A lithium cell (Panasonic, Sanyo, or GP consumer grade), the PG4905 delivers up to 7 years of battery life. Battery status is automatically transmitted as part of every status report, with a low-battery threshold at 2.2 V.
• Front and Back Tamper Protection — Dual tamper switches on both the front cover and rear wall-mount plate instantly report any unauthorized physical access to the control panel, satisfying commercial-grade tamper requirements.
• Flexible Wall or Ceiling Mounting — A compact 92 × 36.5 × 31 mm form factor supports both wall and ceiling installations, allowing deployment in utility rooms, server closets, storage areas, or any space requiring environmental temperature oversight.
• Full Supervision — The PG4905 is fully supervised, continuously confirming its presence and operational status to the control panel—meeting the strict signal-integrity requirements of commercial intrusion and life-safety installations.
• Wide Indoor Operating Range — Rated for indoor operation from -20°C to 50°C (-4°F to 122°F) and probe outdoor use from -30°C to 70°C (-22°F to 158°F), the detector and its probe cover extreme cold-storage and industrial thermal environments.