The Halcyon from Benchmark Space Systems is a Spacecraft Propulsion System with a thrust range of 0.25 - 10 N and a specific impulse of 150 - 170 sec. This propulsion system is developed for 6U through ESPA satellite operations. It has a maximum firing time of 10,000 sec (per thruster) and a propellant mass of 0.66 kg (per 1000 Ns Impulse). The propulsion system requires an input voltage of 12 V and draws an average power of less than 15 W during firing. It supports RS-422 and RS-485 physical layer interfaces. The propulsion system is ideal for applications such as Orbit Insertion, Collision avoidance, Orbit Transfer, Station Keeping, Mission Extension, Momentum Management, RPO and Servicing, and Controlled Deorbit.