DSC PG9905 Wireless Flood Detector
Overview
The DSC PG9905 is a wireless floor-mounted flood sensor designed to detect water presence and transmit encrypted alerts to compatible security and building automation control panels. The unit delivers eight years of operational independence on a single CR123A lithium battery, meaning you can deploy it in difficult-to-access areas — basements, crawlspaces, mechanical rooms — without scheduling frequent service visits for battery replacement. That's a genuine cost reduction in multi-zone residential and light commercial water mitigation strategies.
The PG9905 operates from 0°C to 49°C (32°F to 120°F), making it suitable for climate-controlled interior spaces in virtually any building type. All wireless signals use 128-bit AES encryption, preventing unauthorized devices from spoofing water alerts or eavesdropping on sensor status — a meaningful security requirement in facilities where false alarms trigger costly emergency response.
Key Features
- 8-Year Battery Life: Single CR123A lithium battery rated for up to eight years of continuous operation, dramatically reducing maintenance cycles and service call frequency in deployed networks. This matters when sensors are installed in crawlspaces or beneath raised floors where access is slow and expensive.
- Wireless Flood Detection: Identifies water presence at floor level and transmits event-triggered alerts to the control panel, enabling rapid response before water damage spreads to adjacent areas.
- 128-bit AES Encryption: Wireless signal encryption prevents interception and unauthorized monitoring, eliminating spoofed water alerts that trigger unnecessary emergency dispatch and equipment shutdown.
- Low-Power Wireless Protocol: Optimized signal transmission extends battery intervals and reduces operational cost per deployment year. The efficiency is engineered specifically for long intervals between maintenance windows.
- Floor Mount Configuration: Compact form factor designed for placement on finished floors, basement surfaces, or equipment pad areas. No special mounting hardware required — drop it in place and pair it to the control panel.
- Operating Temperature Range: Rated 0°C to 49°C for reliable performance in climate-controlled interior spaces. Not rated for outdoor or unheated environments; water freezing in the sensor could degrade sensitivity.
- White Finish: Aesthetic housing suitable for indoor environments without gloss or metallic appearance, blending into utility areas without standing out as a security device.
Integration & Compatibility
The PG9905 integrates with DSC control panels and hybrid systems that support encrypted wireless sensor networks. The 128-bit AES encryption standard is compatible with modern DSC PowerSeries and compatible wireless hubs. Verify host panel compatibility and wireless network capacity before deployment — flooding often triggers simultaneous alerts across multiple sensors, and control panel processing bandwidth matters during a water event.
Installation requires line-of-sight wireless range to the receiver hub. Typical indoor range is 100+ feet in unobstructed environments; range drops significantly in buildings with dense wall construction, metal framing, or basements surrounded by concrete block. Test signal strength during system commissioning by walking the sensor away from the hub until the panel reports a low-signal condition — this confirms reliable two-way communication under worst-case deployment placement.
The sensor transmits periodic status signals and event-triggered water detection alerts, allowing centralized monitoring via standard security system interfaces and mobile apps supported by the control panel manufacturer.
What's in the Box
Each PG9905 unit ships with one CR123A lithium battery pre-installed and ready for activation. No mounting hardware, cables, or integration documentation are included — consult your DSC control panel setup guide and the wireless network commissioning section of the system documentation.
Frequently Asked Questions
Q: Can the PG9905 be used in outdoor or wet locations?
A: No. The PG9905 is rated for indoor use only (0°C to 49°C operating range). It is not submersible and has no IP67 or higher environmental rating. Deploy it in basements, utility rooms, and mechanical spaces — not exposed to direct rain, standing water, or freezing conditions.
Q: How often will I need to replace the battery?
A: The CR123A lithium battery is rated for up to eight years of continuous operation. In typical deployments with periodic test transmissions and occasional water detection events, you should expect the full eight-year service interval before replacement. This is a significant advantage in facilities where sensor access is difficult.
Q: What is the wireless range of the PG9905?
A: Typical indoor range is 100+ feet in unobstructed environments. Dense walls, metal framing, and concrete construction reduce range significantly. Test signal strength during commissioning by moving the sensor away from the hub until low-signal is reported, ensuring reliable two-way communication at the final installation location.
Q: Is the PG9905 compatible with all DSC control panels?
A: The PG9905 integrates with DSC control panels that support encrypted wireless sensor networks (such as PowerSeries systems). Verify your specific panel model supports wireless zone expansion and 128-bit AES encryption before deployment. Check your control panel documentation or contact the system installer to confirm compatibility.
Q: Can I use the PG9905 in a wet basement or below a sump pump?
A: The PG9905 detects water presence at the point where it is placed, making it suitable for early-warning deployment near sump pump discharge points or in areas prone to minor seepage. However, it is not designed to sit in standing water continuously. Place it at floor level where water would first appear, not submerged or in a water-filled sump.
Q: Does the PG9905 require a hub or wireless receiver?
A: Yes. The PG9905 is a wireless transmitter only. It requires a compatible DSC control panel or wireless receiver hub equipped with encrypted wireless capability to receive and log water detection alerts. It cannot operate in stand-alone mode.
Ted PerryPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
Having evaluated the DSC PG9905 in several residential and light commercial water mitigation deployments, this detector addresses a real gap in perimeter flood monitoring. The eight-year CR123A battery life is the defining advantage — it eliminates the maintenance burden that typically accompanies wireless sensors in basements and crawlspaces. The PG9905 pairs well with DSC control panels running encrypted wireless protocols, and the 128-bit AES encryption ensures that water detection events cannot be spoofed or monitored by unauthorized devices.
Technical Highlights:
- 8-Year Battery Life: Single CR123A lithium battery eliminates service calls in difficult-to-access areas. In a 20-sensor residential deployment, this translates to roughly 160 fewer battery replacements over a decade compared to sensors rated for 2–3 years — a significant operational cost reduction.
- 128-bit AES Encryption: Wireless signal encryption prevents interception and unauthorized zone triggering. In facilities where false alarms trigger emergency dispatch, this encryption layer is mandatory, not optional.
- 100+ Feet Indoor Range: Typical unobstructed range supports basement-to-main-floor detection without requiring additional wireless repeaters. Test range during commissioning to confirm performance in your building's wall construction.
Deployment Considerations:
- The PG9905 is indoor-only (0°C to 49°C). Do not deploy in unheated crawlspaces or outdoor wet locations — water freezing in the sensor will degrade or destroy detection sensitivity.
- Dense wall construction and metal framing reduce wireless range significantly. Walk the sensor away from the hub during commissioning until low-signal is reported; this confirms placement reliability before final installation.
- The detector transmits status signals periodically and on-event. Verify your DSC control panel has sufficient wireless capacity if deploying multiple PG9905 units — simultaneous flood alerts can strain panel processing during widespread water events.
The PG9905 is best suited for residential basements, apartment building mechanical rooms, and light commercial utility spaces where maintenance access is seasonal or quarterly. Pair it with a hardwired control panel or hybrid system for integrated monitoring, and commission signal strength before occupancy. Skip this if your facility requires continuous submersion monitoring — that requires industrial-grade submersible sensors rated IP67 or higher.
