Check the listing for details. JW3116 Optical Light Source 1310NM 1550NM Light Source Adjustable Output Power. Condition: New. Listed at 128.71 USD. Description JW3116 Optical Light Source 1310NM 1550NM Fiber Optic Light Source Adjustable Output Optical Power Features: - 2 default wavelengths, 1310nm and 1550nm (wavelengths can be customized) - Including wavelength coding - Support low-voltage detection prompt - Support automatic backlight control - Support CW and multiple modulated light output - Adjustable output optical power Specifications: - Calibration wavelength: 1310nm and 1550nm (wavelength can be customized) - Output optical power: -5 to -12dBm - Light source output power adjustable step: < 0.5 (-5 to -9 dBm); < 1.0 (-9 to -12dBm) - Dimensions: 175 x 90 x 44.5mm/6.9 x 3.5 x 1.8" - Net weight: 225g/0.5 lb Package Included: - 1 x Set of Optical Light Source Note: - Support adapter power supply, alkaline battery, Ni-MH battery power supply, etc. Batteries are not included. - The default wavelengths are 1310nm and 1550nm. And one device can support up to 4 wavelengths. If you need other wavelengths, please contact us to cover the cost. Thank you! Payment Terms 1.We accept PayPal only. 2.All major credit cards are accepted through secure payment processor PayPal. 3.Payment must be received within 7 business days of auction closing. 4.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping Terms - For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding. Return Terms 1. If you receive defective item, please kindly notify us within 14 days. We will guide you the returning instruction for replacement or refund. 2. If you purchased in improper condition, please NOTE that the sipping and handling fee will not be refund, all return shipping fee should paid by the buyer unless item DOA. 3. We reserve the right to refuse any returns for objective reasons. Custom Duties & Taxes 1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility. 2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping. Feedback 1. If you are dissatisfied for any reason, please don't be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. 2. If you are satisfied with the product you received, please kindly leave us a positive feedback and 5 star DSR. If there is any problem of your order, please feel free to contact us firstly, we are responsible and credible seller, will follow it for you asap.