The CBU-TDP-LR is a Bluetooth-controlled, long-range trailing-edge dimmer designed for use with incandescent lamps, dimmable LED lamps, and dimmable LED control gear. It offers flexible installation options and can be mounted outside of a metal switch box, inside a luminaire, or in a ceiling outlet box. The module conveniently fits into a standard ½-inch knockout opening, allowing for simple integration into various lighting systems. During installation, it is essential to ensure that the maximum permitted ambient temperature is not exceeded to maintain reliable operation and long-term durability.
This compact dimming module supports a maximum output of 50 watts at 120 volts AC and incorporates built-in overcurrent and over-temperature protection to safeguard both the device and connected loads. It operates using a trailing-edge phase-cut dimming method, making it compatible with a wide range of modern LED and incandescent lighting products. The unit’s minimum load requirement is 1 watt, and it can handle inrush currents up to 10 amperes for 100 milliseconds, ensuring smooth performance across varying electrical conditions.
Control of the CBU-TDP-LR is highly versatile. It can be operated through the Casambi App, available for both iOS and Android devices, allowing intuitive wireless configuration and control. Alternatively, it can also function with traditional wall switches for convenient manual operation. The Casambi app, downloadable for free from the Apple App Store and Google Play Store, enables users to adjust brightness, configure scenes, and manage devices within a Casambi Bluetooth mesh network.
The device operates within a voltage range of 120 VAC at 60 Hz, with a maximum mains current of 0.43 mA and a no-load standby power consumption of less than 0.3 watts. Its integrated radio transceiver communicates over the 2.402 – 2.480 GHz frequency band and transmits at a maximum power of +8 dBm. Casambi’s Bluetooth mesh network technology ensures reliable communication between multiple devices, as each CBU-TDP-LR also functions as a signal repeater. Under optimal conditions with a clear line of sight, the wireless range can reach approximately 650 feet (200 meters). However, in enclosed metal housings or obstructed environments, range may be significantly reduced, emphasizing the importance of on-site testing to confirm consistent signal performance across the intended coverage area.
Built for dependable operation, the dimmer performs reliably in ambient temperatures from –4°F to +113°F (–20°C to +45°C) and can withstand case temperatures up to +167°F (+75°C). It supports storage temperatures between –13°F and +167°F (–25°C to +75°C) and tolerates humidity levels up to 80% (non-condensing). The unit’s housing measures 2.2 × 1.9 × 1.1 inches (2.5 inches including the threaded nipple), equivalent to 55.0 × 49.4 × 27.0 millimeters (64.2 mm with nipple), and weighs approximately 2.9 ounces (80 grams). Rated IP20, it is intended for indoor use only.
The wire connections support 16 AWG (1.32 mm²) stranded conductors, with pre-stripped wire ends measuring 0.47 inches (12 mm). These mechanical and electrical details ensure straightforward wiring and installation. The combination of compact form factor, robust protection features, and seamless integration into the Casambi Bluetooth mesh network makes the CBU-TDP-LR an ideal solution for retrofitting or upgrading lighting control in commercial, residential, and architectural environments where wireless dimming and extended range connectivity are required.
https://casambi.com/ecosystem/cbu-tdp-lr/
