Cypress OPTW-100 Passive Wiegand Signal Splitter 5-16VDC

The Cypress OPTW-100 is a Wiegand signal optical isolator and splitter designed to connect two access control readers to one controller port or share one reader with two access control panels. Featuring optically isolated Data 0/Data 1 connections, 5-16VDC operating power, and support for 5-24VDC Wiegand data signals, it helps resolve incompatible signal voltage levels and ground potential issues. The module draws approximately 20mA at 12VDC and includes selectable 1.5k pull-up resistors for 5V Wiegand outputs. Its compact housing supports integration into existing access control installations.

Cypress OPTW-100 Wiegand Signal Optical Isolator and Access Control Splitter

The Cypress OPTW-100 Wiegand Signal Optical Isolator is a compact electronic interface module designed to connect, split, and electrically isolate Wiegand data signals between compatible access control readers and security controllers. Manufactured by Cypress Integration Solutions, the OPTW-100 supports three primary applications: connecting two Wiegand readers to one access controller port, connecting one Wiegand reader to two separate access control panels, and isolating Wiegand devices operating at different signal voltage levels. Its optical isolation circuitry enables Wiegand data transmission between electrically separated devices without directly connecting their data circuits. The module is suitable for commercial access control installations, vehicle gates, shared building entrances, and security system retrofits where existing reader wiring or electrical differences complicate equipment integration.

The OPTW-100 incorporates optical couplers that transfer Wiegand Data 0 and Data 1 signals between electrically isolated input and output circuits. Its operating power input accepts 5-16VDC, with typical current consumption of 20mA at 12VDC, allowing it to use a compatible reader or controller power connection without requiring a dedicated external power supply. The input interface accepts 5-24VDC Wiegand signal levels, while the isolated output interface accommodates compatible Wiegand data circuits. Two selectable 1.5k pull-up resistors connected to a 5VDC reference can be enabled when the receiving equipment requires additional signal pull-up. The module supports conventional Wiegand communication wiring, with the manufacturer referencing a typical maximum Wiegand transmission distance of 500 feet, subject to cable characteristics and the connected equipment.

Designed for multi-reader and multi-controller access control installations, the Cypress OPTW-100 provides a practical solution for several common system configurations. At vehicle entrances, two credential readers positioned at different heights can share one Wiegand controller port, allowing passenger vehicles and taller commercial vehicles to use the same access control input. At shared commercial or multi-tenant entrances, a single credential reader can transmit the same identification data to two separate access control panels for independent processing by compatible controllers. The optical isolation function also helps address problems caused by different Wiegand data voltages, power supply ground potential differences, and incompatible pull-up resistor arrangements. These functions simplify selected access control integration projects without requiring replacement of otherwise compatible readers or controllers.

The Cypress OPTW-100 uses two clearly identified terminal headers for signal connections. The three-position J1 input header provides Data 0 IN, Data 1 IN, and common data ground, while the six-position J2 output header provides 5-16VDC power input, ground, Data 0 OUT, Data 1 OUT, and two selectable 5V pull-up connections. The manufacturer's 2026 documentation also addresses installations using hybrid Wiegand/OSDP credential readers, where the shared physical data interface may not produce conventional Wiegand signaling. In certain hybrid-reader configurations, the OPTW-100 can isolate or standardize the signal, although additional resistors or a separately specified Cypress OPTW-200 Wiegand Signal Standardizer may be required. Correct installation depends on the reader's data interface, controller input requirements, voltage levels, and the manufacturer's recommended wiring configuration.

The Cypress OPTW-100 features a compact mounting enclosure measuring 2.865 inches long, 1.855 inches wide, and 0.960 inches high, with a weight of approximately 2 ounces (56.7 grams) according to the manufacturer's May 2026 product manual. Its enclosure includes mounting holes for securing the module inside a suitable protected access control equipment location. Cypress specifies an operating temperature range of -40 C to 100 C (-40 F to 212 F) and identifies the product as FCC Part 15 compliant and manufactured in the United States. The module is supplied with a quick-start guide and manufacturer warranty information. The OPTW-100 replaces the earlier Cypress CVX-OPTW, offering an expanded 5-16VDC power input range while preserving its essential Wiegand splitter and optical isolation functions. As a signal interface rather than a standalone access controller, it does not independently store credentials, authorize users, or operate door locking relays. Its optical isolation capabilities provide a focused solution for integrating compatible Wiegand equipment into existing and new electronic access control systems.