DSC PG9933 PowerG Wireless Carbon Monoxide (CO) Detector

The DSC PG9933 is a 915 MHz PowerG wireless carbon monoxide detector with an electrochemical CO sensor, 85 dBA audible alarm at 10 feet, and ANSI Temporal 4 warning signals. Designed for compatible DSC PowerG security systems, it provides local audible and visual alarms while transmitting CO alarm, tamper, supervision, low-battery, and detector trouble signals to the connected control panel. The detector features a tricolor LED, Test/Hush button, replaceable 3V CR123A lithium battery, and five-year end-of-life timer. Its compact white housing supports indoor wall or ceiling mounting.

DSC PG9933 PowerG 915 MHz Wireless Carbon Monoxide Detector

The DSC PG9933 is a wireless carbon monoxide detector featuring a precision electrochemical sensing element and two-way PowerG radio communication for compatible residential security and life safety systems. Manufactured by DSC, a Johnson Controls security brand, the PG9933 continuously monitors the surrounding air for carbon monoxide, an odorless and colorless gas associated with incomplete combustion from fuel-burning appliances, heating equipment, and other combustion sources. The detector operates on the North American 915 MHz PowerG wireless platform, eliminating the need for a hardwired connection to the alarm control panel. When hazardous carbon monoxide conditions are detected, the PG9933 activates its built-in sounder and visual indicator while transmitting an alarm message to the compatible receiving system. This arrangement provides local warning and supports system-based notification through an appropriately configured security panel and monitoring service. The PG9933 is intended for residential applications, including homes, apartments, sleeping areas, hallways, and other protected indoor locations requiring carbon monoxide detection.

The PG9933 incorporates a high-sensitivity electrochemical carbon monoxide sensor with an integrated audible alarm producing at least 85 dBA at 10 feet (3 meters). When the detector enters alarm, its sounder activates using the ANSI S3.41 Temporal 4 carbon monoxide warning pattern, while the red status LED flashes to indicate the alarm condition. A built-in Test/Hush button supports local functional testing, system alarm verification, and temporary silencing of the audible alarm. During an active CO alarm, the sounder can be hushed for approximately five minutes according to the manufacturer's operating instructions. The detector also supports a manufacturer-specified functional CO gas test using an approved testing agent, allowing qualified technicians to verify the sensor's response to carbon monoxide rather than relying solely on the electronic test function. These capabilities provide local alarm identification and maintenance procedures for professionally installed residential CO protection systems.

The DSC PG9933 uses PowerG frequency-hopping wireless technology with encrypted bidirectional communication to transmit detector conditions to compatible alarm receiving equipment. The PowerG platform incorporates adaptive transmission power, time-division communication, and 128-bit AES encryption to help maintain reliable communication and protect transmitted security information. The detector reports carbon monoxide alarms, low-battery conditions, tamper events, sensor faults, end-of-life trouble, and wireless supervision messages to the connected control panel. An integrated mounting tamper switch detects removal from the detector's backplate, while the device's tricolor LED provides separate operating indications. During normal operation, the green LED flashes approximately every 12 seconds; a yellow LED signals trouble, low battery, or end-of-life conditions, and the red LED indicates a carbon monoxide alarm. The detector uses one replaceable 3V Panasonic CR123A lithium battery, included with the unit, and automatically supervises battery condition. The manufacturer specifies a minimum battery life expectancy of one year in the installation manual, while its marketing datasheet identifies approximately five years under typical usage conditions. Actual battery replacement frequency depends on operating conditions and communication activity.

The PG9933 features a round white enclosure measuring approximately 4.9 inches in diameter and 1.9 inches deep (125.3 x 48 mm), with an assembled weight of approximately 7 ounces (197 grams). Its removable mounting bracket supports installation on a wall or ceiling in suitable residential environments. The device is designed for an operating temperature range of 40 F to 100 F (4.4 C to 37.8 C), with relative humidity from 15% to 93%, non-condensing. The manufacturer specifies an average operating current of approximately 16 microamps, supporting low-power wireless operation. Its mounting bracket includes an optional tamper-resistant breakaway feature that helps prevent unauthorized removal without a tool. Installers enroll the detector using its individual seven-digit serial number and complete the wireless placement test before finalizing the installation. The PG9933 also includes a five-year detector end-of-life function, with the replacement date marked on the back of the unit. When the detector reaches its specified service life, it generates a trouble indication and the complete detector must be replaced, regardless of remaining battery capacity.

The DSC PG9933 is designed for integration with compatible North American 915 MHz PowerG security control panels and wireless receivers. Manufacturer documentation identifies compatibility with supported DSC PowerSeries Neo and iotega systems, subject to firmware and panel configuration requirements. The PG9933 is UL listed for applicable carbon monoxide detection applications, with corresponding ULC certification, California State Fire Marshal recognition, and FCC/IC wireless regulatory approvals documented by DSC. The detector must be installed according to the manufacturer's instructions and applicable carbon monoxide alarm placement requirements. Its electrochemical sensor detects carbon monoxide only and does not provide smoke, heat, combustible gas, or fire detection. Unlike conventional standalone CO alarms, the PG9933 combines a local audible warning with supervised wireless alarm reporting to a compatible security system, allowing CO events and device maintenance conditions to be communicated through the connected alarm platform. It does not require Wi-Fi or a direct Internet connection, but remote notifications and central station reporting depend on the capabilities and service configuration of the host system. Combining electrochemical CO sensing, 85 dBA Temporal 4 notification, encrypted PowerG communication, replaceable lithium battery power, and supervised end-of-life reporting, the DSC PG9933 provides a wireless carbon monoxide detection solution for compatible residential security installations.