Sennheiser SZI 1015 W, IR Emitter, Power: 2 W (72 diodes), Supercardioid, Broadband (30 KHz - 6 MHz), In/Out (BNC and hardwire), Ext. Supply necessary (25-30 VDC) via NT/SI 1015, Tripod connection (3/8""and 1/2""), Sufficient for up to 400 sqm, Colour: White