Camden CX-33 Advanced Logic Relay

The Camden Door Controls CX-33 is a programmable advanced logic relay for automatic door operators, access control systems, and electric locking devices. Featuring 15 operating modes with configurable sub-modes, five control inputs, and three Form C relay outputs rated at 3A at 24 VDC, it supports door sequencing, airlocks, accessible restrooms, magnetic lock control, and fire alarm interfaces. The module operates on 12/24 VAC/DC and includes a three-digit blue LED display, push-button programming, and five adjustable hold and delay timers. Its compact, clear plastic enclosure supports installation inside compatible operator headers and equipment cabinets.

Camden CX-33 Advanced Logic Relay for Automatic Door Control, 12/24 VAC/DC

The Camden Door Controls CX-33 Advanced Logic Relay provides programmable switching, timing, and sequencing functions for commercial automatic door and access control installations. Designed to coordinate multiple control signals, the CX-33 combines 15 operating modes, five configurable inputs, and three independently controlled Form C relay outputs in a compact module. Its programming options support two- and three-door sequencing, airlock control, accessible restroom operation, magnetic lock release, telephone entry integration, and automatic door operator coordination. The controller is suitable for commercial entrances, healthcare facilities, educational buildings, apartment complexes, secured vestibules, and barrier-free restroom applications. By combining multiple door control functions into one programmable relay, the CX-33 reduces the need for separate timing relays and specialized sequencing modules.

The CX-33 features four dry-contact inputs and one optically isolated wet-voltage input, allowing integration with compatible push plates, motion sensors, access control relays, door position switches, and external signaling equipment. Its three Form C (SPDT) relay outputs are rated at 3A at 24 VDC and support configurable activation, sequencing, and maintained operation. The controller provides five adjustable timing functions, including three relay hold timers ranging from 0-50 seconds, a 0-15-second delay timer, and a 0-60-second delay timer. An additional 0-10-second delay-on-activation function can be applied to supported operating modes. These settings allow installers to coordinate electric lock release, automatic door opening, door closing, and subsequent relay activation. Camden specifies a 0.5-second response time and an electrical relay life of approximately 100,000 operations at rated capacity.

The Camden CX-33 incorporates a three-digit blue LED programming display with dedicated MENU, UP, and DOWN buttons for selecting operating modes and adjusting timing parameters without a computer or external programming device. Available configurations include bidirectional door sequencing, two-door interlocking, timed airlocks, restroom occupancy control, low-energy safety sensor inhibition, magnetic lock switching, and programmable lockdown functions. In accessible restroom applications, the controller can coordinate interior and exterior activation switches, electric locking hardware, automatic door operators, and illuminated occupancy signage. Supported magnetic lock configurations can prevent relocking until the monitored door has closed, while designated fire alarm input modes provide release signaling through an appropriately designed system. Each operating mode has specific wiring and programming requirements, and emergency release functions must be implemented according to the applicable life safety design.

The CX-33 operates on 12/24 VAC/DC power, with Camden specifying an allowable supply range of 12-30 VAC/DC, 105 mA typical current consumption, and 320 mA maximum current. Its clear protective plastic enclosure measures approximately 6 inches wide, 2 inches high, and 7/8 inch deep (152 51 22 mm), allowing installation inside suitable automatic door operator headers, electrical cabinets, or protected control enclosures. The module mounts using screws or compatible hook-and-loop fastening material and operates in temperatures from -22 F to 185 F (-30 C to 85 C). Its power circuitry incorporates filtering and surge protection, while accessible terminal strips simplify low-voltage field connections. Camden provides a three-year limited manufacturer warranty. The CX-33 is supplied as a standalone logic relay module; the related CX-33PS includes a prewired metal cabinet and 2.5A power supply. Installation requires compatible external power, switching devices, locking hardware, and door operators, with final system operation verified against Camden's wiring diagrams and applicable ANSI/BHMA A156.10, ANSI/BHMA A156.19, and emergency egress requirements.