The etMEMSTM Series Dual-VOA is based on a proprietary micro-electro-mechanical mechanism featuring ultra-high reliability, compact design, fiber to fiber directly coupling technology, simple construction, easy drive, and excellent optical performance. The etMEMSTM series Dual-VOA is fully compliant with the Telcordia 1209 and 1221 reliability standards. The MM series Dual-VOA is available in either normally-transparent or normally-dark configurations. The VOA is driven by an electrical current or voltage signal, and the attenuation can be continuously adjusted with the applied signal. The MM series can be repackaged with pin-pin compatibility to most VOAs on the market. Standard package contains one or two VOAs in dimensions of 23.2mmx10.1mmx9.0mm.