SWX-121-IV

The SensorWorx SWX-121-IV is a versatile and advanced wall switch sensor designed for use in commercial and industrial environments. This dual voltage ac switch sensor is capable of detecting the presence or absence of switches with voltage ranges between 120-277Vac.

The SWX-121-IV is equipped with a highly sensitive and reliable reed switch that can reliably detect the state of a wall switch, even in noisy environments. The sensor is designed with a robust housing that can withstand the rigors of industrial use, ensuring long-term reliability and durability.

This sensor is ideal for use in building automation systems, HVAC control applications, and energy management systems. The SWX-121-IV can be easily integrated with various building automation and control systems using its Normally Open (NO) and Normally Closed (NC) switch contacts.

The sensor is also equipped with a status LED that indicates the current state of the switch, making it easy to troubleshoot and diagnose issues. The SWX-121-IV is a RoHS compliant device, ensuring that it meets the strictest environmental standards.

The sensor's compact size and low profile design make it easy to install in tight spaces and blend seamlessly with the surrounding decor. The SWX-121-IV is backed by SensorWorx's industry-leading technical support and customer service, ensuring that you receive the best possible experience with your purchase.

Overall, the SensorWorx SWX-121-IV is a high-performance and reliable wall switch sensor that is perfect for use in commercial and industrial applications where reliable switch detection is critical. Its dual voltage ac compatibility, robust design, and easy integration make it a must-have for building automation and control systems.

Pros and Cons of Buying SensorWorx SWX-121-IV Wall Switch Sensor (Dual 120-277VAC)

a. Versatility: This sensor is suitable for both 120V and 277VAC applications, making it a convenient choice for various commercial and industrial settings.

b. Energy Efficiency: It can be used to control lights and other electrical loads based on occupancy or daylight levels, leading to significant energy savings.

c. Reliability: SensorWorx is known for manufacturing high-quality sensors with robust designs, ensuring long-term functionality and durability.

d. Adjustable Settings: The sensor offers adjustable sensitivity levels for both occupancy and daylight detection, allowing users to customize the device according to their specific needs.

a. Cost: Compared to simpler wall-mounted occupancy sensors, the SensorWorx SWX-121-IV may have a higher upfront cost due to its dual voltage support and advanced features.

b. Complex Installation: Installation of this sensor might require additional expertise and time compared to standard occupancy sensors due to its dual voltage capabilities and adjustable settings.

c. Potential False Triggers: Occupancy sensors can sometimes be triggered by pets or moving objects that are not intended to activate the sensor, leading to unnecessary energy consumption or inconvenience.

The SensorWorx SWX-121-IV Wall Switch Sensor (Dual 120-277VAC) offers several advantages, including versatility, energy efficiency, reliability, and adjustable settings. However, it also comes with some disadvantages, such as a higher upfront cost, complex installation process, and potential false triggers.

If you're looking for a simple occupancy sensor for a residential application, you might want to consider a more cost-effective option. However, if you require a dual voltage sensor with advanced features for commercial or industrial settings, the SensorWorx SWX-121-IV could be an excellent investment for long-term energy savings and efficient control of electrical loads.

Based on the analysis of its pros and cons, the SensorWorx SWX-121-IV Wall Switch Sensor (Dual 120-277VAC) is recommended for those seeking a versatile, energy-efficient, and reliable occupancy sensor for commercial or industrial applications with dual voltage requirements. If simpler and more cost-effective options are sufficient for your needs, consider other single voltage occupancy sensors instead.

Details:

Sensorworx - SWX-121-IV wall switch sensor dual tech 120-277vac.

specifications faclighting:

• brand: Sensorworx
• mpn: Swx-121-iv
• type: Wall Switch Sensor

returns faclighting:

• paid by: buyer
• method: money back
• time: 30 days
• policy: returns accepted

payments faclighting:

• other
• credit card: diners-club
• wallet: google-pay

seller faclighting:

• rating: 99.6%
• city: north salt lake, utah
• # reviews: 52514

shipping faclighting:

• type: fixed
• transit: 4-8 days
• carrier: usps
• class: standard
• service: usps ground advantage

general faclighting:

• category: Business & Industrial > Maintenance Safety > Facility > Lights Lighting

offer faclighting:

• started: january 19, 2026
• prices: $45.00–$63.00
• item condition:
  • New – Open box
  • New
• sold #: 13
• in stock #: 2
• options: ship-to-home
• availability: in stock

Grouped With:

• SWX-950-AX-D2: , Sensorworx
• SWX-121-1-D-MS-WH: STAND, Sensorworx
• SWX-121-D-WH-2: WALL SWITCH SENSOR, Sensorworx
• SWX-511-AD: MOUNT SENSOR, Sensorworx