Special Offer ST-300 SPIDER, ST-031M Piranha ! Read 19 times Print Email JSC Selcom Security has a opportunity to offer Wireline Analyzer ST-300 SPIDER with -20% discount, and ST-031M Piranha with -10% discount. *This limited quantity offer is valid until 30th of June 2019. Tweet More in this category: « JSC Selcom Security. Training Seminar in Lithuania 2019.